configs: set SPL_TEXT_BASE by default for k3 platforms

SPL_TEXT_BASE is used as the load address for the main domain SPL on k3
platforms.

Since the config value is the same for every board, this patch sets the
value 0x80080000 as default for all 64-bit ARCH_K3, 0x43c00000 as
default for the R5 cores and deletes the instances of SPL_TEXT_BASE in
individual defconfigs.

Signed-off-by: Anshul Dalal <anshuld@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/common/spl/Kconfig b/common/spl/Kconfig
index 3282e08..b076f49 100644
--- a/common/spl/Kconfig
+++ b/common/spl/Kconfig
@@ -270,6 +270,8 @@
 	default 0x40200000 if OMAP34XX
 	default 0x402F4000 if AM43XX
 	default 0x402F0400 if AM33XX
+	default 0x80080000 if ARCH_K3 && ARM64
+	default 0x43c00000 if ARCH_K3 && !ARM64
 	default 0x00908000 if ARCH_MX6
 	default 0x00912000 if ARCH_MX7
 	default 0x40301350 if OMAP54XX