arm: K3: Add initial support for TI's K3 generation of SoCs

Add support for Texas Instruments' K3 Generation Processor
families.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 2e79d7d..e5a5188 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -171,7 +171,7 @@
 	default 0x140 if ARCH_MVEBU
 	default 0x200 if ARCH_SOCFPGA || ARCH_AT91
 	default 0x300 if ARCH_ZYNQ || ARCH_KEYSTONE || OMAP34XX || OMAP44XX || \
-		         OMAP54XX || AM33XX || AM43XX
+		         OMAP54XX || AM33XX || AM43XX || ARCH_K3
 	default 0x4000 if ARCH_ROCKCHIP
 	help
 	  Address on the MMC to load U-Boot from, when the MMC is being used