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/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 41f43af..5fa2725 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -628,7 +628,7 @@
 config OMAP_SERIAL
 	bool "Support for OMAP specific UART"
 	depends on DM_SERIAL
-	default y if ARCH_OMAP2PLUS
+	default y if (ARCH_OMAP2PLUS || ARCH_K3)
 	select SYS_NS16550
 	help
 	  If you have an TI based SoC and want to use the on-chip serial