board: ti: j784s4: Add board support for J784S4 EVM

Add board files for J784S4 EVM.

SYS_DISABLE_DCACHE_OPS is selected in the Kconfig because
J784S4/AM69 are a coherent architecture at A72 level by
MSMC support.

Signed-off-by: Hari Nagalla <hnagalla@ti.com>
Signed-off-by: Dasnavis Sabiya <sabiya.d@ti.com>
Signed-off-by: Apurva Nandan <a-nandan@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> # AM69-SK
diff --git a/arch/arm/mach-k3/Kconfig b/arch/arm/mach-k3/Kconfig
index 217def3..fdde67c 100644
--- a/arch/arm/mach-k3/Kconfig
+++ b/arch/arm/mach-k3/Kconfig
@@ -157,5 +157,6 @@
 source "arch/arm/mach-k3/am62ax/Kconfig"
 source "arch/arm/mach-k3/j721e/Kconfig"
 source "arch/arm/mach-k3/j721s2/Kconfig"
+source "arch/arm/mach-k3/j784s4/Kconfig"
 
 endif
diff --git a/arch/arm/mach-k3/j784s4/Kconfig b/arch/arm/mach-k3/j784s4/Kconfig
new file mode 100644
index 0000000..1eadfb3
--- /dev/null
+++ b/arch/arm/mach-k3/j784s4/Kconfig
@@ -0,0 +1,34 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# Copyright (C) 2023-2024 Texas Instruments Incorporated - https://www.ti.com/
+#	Hari Nagalla <hnagalla@ti.com>
+
+if SOC_K3_J784S4
+
+choice
+	prompt "K3 J784S4 board"
+	optional
+
+config TARGET_J784S4_A72_EVM
+	bool "TI K3 based J784S4 EVM running on A72"
+	select ARM64
+	select BOARD_LATE_INIT
+	select SYS_DISABLE_DCACHE_OPS
+	select BINMAN
+
+config TARGET_J784S4_R5_EVM
+	bool "TI K3 based J784S4 EVM running on R5"
+	select CPU_V7R
+	select SYS_THUMB_BUILD
+	select K3_LOAD_SYSFW
+	select RAM
+	select SPL_RAM
+	select K3_DDRSS
+	select BINMAN
+	imply SYS_K3_SPL_ATF
+
+endchoice
+
+source "board/ti/j784s4/Kconfig"
+
+endif