configs: am68_sk: Move to separate defconfig for AM68 SK board

Add defconfig for AM68 SK R5 and A72 configuration.

This includes and modifies the AM68 EVM defconfigs:
j721s2_evm_r5_defconfig -> am68_sk_r5_defconfig
j721s2_evm_a72_defconfig -> am68_sk_a72_defconfig

Reviewed-by: Neha Malcom Francis <n-francis@ti.com>
Signed-off-by: Manorit Chawdhry <m-chawdhry@ti.com>
diff --git a/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi b/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi
index b8fc62f..dca5884 100644
--- a/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi
+++ b/arch/arm/dts/k3-am68-sk-base-board-u-boot.dtsi
@@ -129,3 +129,26 @@
 	dr_mode = "peripheral";
 	bootph-all;
 };
+
+#ifdef CONFIG_TARGET_J721S2_A72_EVM
+
+#define SPL_AM68_SK_DTB "spl/dts/k3-am68-sk-base-board.dtb"
+#define AM68_SK_DTB "u-boot.dtb"
+
+&spl_j721s2_evm_dtb {
+	filename = SPL_AM68_SK_DTB;
+};
+
+&j721s2_evm_dtb {
+	filename = AM68_SK_DTB;
+};
+
+&spl_j721s2_evm_dtb_unsigned {
+	filename = SPL_AM68_SK_DTB;
+};
+
+&j721s2_evm_dtb_unsigned {
+	filename = AM68_SK_DTB;
+};
+
+#endif
diff --git a/arch/arm/dts/k3-j721s2-binman.dtsi b/arch/arm/dts/k3-j721s2-binman.dtsi
index 7efb135..c46fda6 100644
--- a/arch/arm/dts/k3-j721s2-binman.dtsi
+++ b/arch/arm/dts/k3-j721s2-binman.dtsi
@@ -142,10 +142,7 @@
 #ifdef CONFIG_TARGET_J721S2_A72_EVM
 
 #define SPL_J721S2_EVM_DTB "spl/dts/k3-j721s2-common-proc-board.dtb"
-#define SPL_AM68_SK_DTB "spl/dts/k3-am68-sk-base-board.dtb"
-
 #define J721S2_EVM_DTB "u-boot.dtb"
-#define AM68_SK_DTB "arch/arm/dts/k3-am68-sk-base-board.dtb"
 
 &binman {
 	ti-dm {
@@ -306,20 +303,6 @@
 					};
 
 				};
-
-				fdt-1 {
-					description = "k3-am68-sk-base-board";
-					type = "flat_dt";
-					arch = "arm";
-					compression = "none";
-					ti-secure {
-						content = <&spl_am68_sk_dtb>;
-						keyfile = "custMpk.pem";
-					};
-					spl_am68_sk_dtb: blob-ext {
-						filename = SPL_AM68_SK_DTB;
-					};
-				};
 			};
 
 			configurations {
@@ -331,13 +314,6 @@
 					loadables = "tee", "dm", "spl";
 					fdt = "fdt-0";
 				};
-
-				conf-1 {
-					description = "k3-am68-sk-base-board";
-					firmware = "atf";
-					loadables = "tee", "dm", "spl";
-					fdt = "fdt-1";
-				};
 			};
 		};
 	};
@@ -370,25 +346,6 @@
 						algo = "crc32";
 					};
 				};
-
-				fdt-1 {
-					description = "k3-am68-sk-base-board";
-					type = "flat_dt";
-					arch = "arm";
-					compression = "none";
-					ti-secure {
-						content = <&am68_sk_dtb>;
-						keyfile = "custMpk.pem";
-					};
-					am68_sk_dtb: blob-ext {
-						filename = AM68_SK_DTB;
-					};
-
-					hash {
-						algo = "crc32";
-					};
-				};
-
 			};
 
 			configurations {
@@ -400,13 +357,6 @@
 					loadables = "uboot";
 					fdt = "fdt-0";
 				};
-				conf-1 {
-					description = "k3-am68-sk-base-board";
-					firmware = "uboot";
-					loadables = "uboot";
-					fdt = "fdt-1";
-				};
-
 			};
 		};
 	};
@@ -429,20 +379,10 @@
 					type = "flat_dt";
 					arch = "arm";
 					compression = "none";
-					blob {
+					spl_j721s2_evm_dtb_unsigned: blob {
 						filename = SPL_J721S2_EVM_DTB;
 					};
 				};
-				fdt-1 {
-					description = "k3-am68-sk-base-board";
-					type = "flat_dt";
-					arch = "arm";
-					compression = "none";
-					blob {
-						filename = SPL_AM68_SK_DTB;
-					};
-				};
-
 			};
 
 			configurations {
@@ -454,12 +394,6 @@
 					loadables = "tee", "dm", "spl";
 					fdt = "fdt-0";
 				};
-				conf-1 {
-					description = "k3-am68-sk-base-board";
-					firmware = "atf";
-					loadables = "tee", "dm", "spl";
-					fdt = "fdt-1";
-				};
 			};
 		};
 	};
@@ -480,26 +414,13 @@
 					type = "flat_dt";
 					arch = "arm";
 					compression = "none";
-					blob {
+					j721s2_evm_dtb_unsigned: blob {
 						filename = J721S2_EVM_DTB;
 					};
 					hash {
 						algo = "crc32";
 					};
 				};
-				fdt-1 {
-					description = "k3-am68-sk-base-board";
-					type = "flat_dt";
-					arch = "arm";
-					compression = "none";
-					blob {
-						filename = AM68_SK_DTB;
-					};
-					hash {
-						algo = "crc32";
-					};
-				};
-
 			};
 
 			configurations {
@@ -511,12 +432,6 @@
 					loadables = "uboot";
 					fdt = "fdt-0";
 				};
-				conf-1 {
-					description = "k3-am68-sk-base-board";
-					firmware = "uboot";
-					loadables = "uboot";
-					fdt = "fdt-1";
-				};
 			};
 		};
 	};