defconfig: k2l_hs_evm: Add k2l_hs_evm_defconfig

Adds a dedicated defconfig to build TI K2L secure
devices and updates MAINTAINERS.

k2l_hs_evm_defconfig is created from the k2l_evm_defconfig
and removes support for SPL, as SPL is not supported on K2
HS devices. Corrects SYS_TEXT_BASE for HS devices.

Also adds TI_SECURE_DEVICE and FIT_IMAGE_POST_PROCESS to
include support for secure image creation and authentication

Signed-off-by: Madan Srinivas <madans@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Andrew F. Davis <afd@ti.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index d5059f6..a97c439 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -486,6 +486,7 @@
 F:	configs/k2hk_hs_evm_defconfig
 F:	configs/k2e_hs_evm_defconfig
 F:	configs/k2g_hs_evm_defconfig
+F:	configs/k2l_hs_evm_defconfig
 
 TQ GROUP
 #M:	Martin Krause <martin.krause@tq-systems.de>