Move fdt_simplefb to boot/

This relates to booting, so move it there. Create a new Kconfig menu for
things related to devicetree fixup.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/boot/Kconfig b/boot/Kconfig
index 0a98f1e..39c51e9 100644
--- a/boot/Kconfig
+++ b/boot/Kconfig
@@ -1538,6 +1538,22 @@
 
 endmenu
 
+if OF_LIBFDT
+
+menu "Devicetree fixup"
+
+config FDT_SIMPLEFB
+	bool "FDT tools for simplefb support"
+	help
+	  Enable the fdt tools to manage the simple fb nodes in device tree.
+	  These functions can be used by board to indicate to the OS
+	  the presence of the simple frame buffer with associated reserved
+	  memory
+
+endmenu
+
+endif # OF_LIBFDT
+
 config USE_BOOTARGS
 	bool "Enable boot arguments"
 	help
diff --git a/boot/Makefile b/boot/Makefile
index f15a161..6ce983b 100644
--- a/boot/Makefile
+++ b/boot/Makefile
@@ -39,6 +39,7 @@
 endif
 
 obj-$(CONFIG_$(SPL_TPL_)OF_LIBFDT) += fdt_support.o
+obj-$(CONFIG_$(SPL_TPL_)FDT_SIMPLEFB) += fdt_simplefb.o
 
 obj-$(CONFIG_$(SPL_TPL_)OF_LIBFDT) += image-fdt.o
 obj-$(CONFIG_$(SPL_TPL_)FIT_SIGNATURE) += fdt_region.o
diff --git a/common/fdt_simplefb.c b/boot/fdt_simplefb.c
similarity index 100%
rename from common/fdt_simplefb.c
rename to boot/fdt_simplefb.c
diff --git a/common/Kconfig b/common/Kconfig
index d11292f..21eaa5e 100644
--- a/common/Kconfig
+++ b/common/Kconfig
@@ -1157,14 +1157,5 @@
 
 endif
 
-config FDT_SIMPLEFB
-	bool "FDT tools for simplefb support"
-	depends on OF_LIBFDT
-	help
-	  Enable the fdt tools to manage the simple fb nodes in device tree.
-	  These functions can be used by board to indicate to the OS
-	  the presence of the simple frame buffer with associated reserved
-	  memory
-
 config IO_TRACE
 	bool
diff --git a/common/Makefile b/common/Makefile
index 0948721..5c16172 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -17,7 +17,6 @@
 obj-$(CONFIG_DISPLAY_BOARDINFO) += board_info.o
 obj-$(CONFIG_DISPLAY_BOARDINFO_LATE) += board_info.o
 
-obj-$(CONFIG_FDT_SIMPLEFB) += fdt_simplefb.o
 obj-$(CONFIG_MII) += miiphyutil.o
 obj-$(CONFIG_CMD_MII) += miiphyutil.o
 obj-$(CONFIG_PHYLIB) += miiphyutil.o