Kconfig: Enable FIT support by default for TI platforms

Almost all TI defconfigs enable this already, add this as a default
and remove the explicit assignment.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7812f21..c71849e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -267,6 +267,7 @@
 	bool
 	select CPU_V7
 	select SUPPORT_SPL
+	imply FIT
 
 config ARM64_SUPPORT_AARCH32
 	bool "ARM64 system support AArch32 execution state"
@@ -613,6 +614,7 @@
 	select SUPPORT_SPL
 	select SYS_THUMB_BUILD
 	select CMD_POWEROFF
+	imply FIT
 
 config ARCH_MESON
 	bool "Amlogic Meson"