LS1012AFRWY: Add Secure Boot support

Added the following:
1. defconfig for LS1012AFRWY Secure boot
2. PfE Validation support

Signed-off-by: Vinitha V Pillai <vinitha.pillai@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/board/freescale/ls1012afrdm/ls1012afrdm.c b/board/freescale/ls1012afrdm/ls1012afrdm.c
index e30ad6e..315da8b 100644
--- a/board/freescale/ls1012afrdm/ls1012afrdm.c
+++ b/board/freescale/ls1012afrdm/ls1012afrdm.c
@@ -18,6 +18,7 @@
 #include <environment.h>
 #include <fsl_mmdc.h>
 #include <netdev.h>
+#include <fsl_sec.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -140,6 +141,10 @@
 	gd->env_addr = (ulong)&default_environment[0];
 #endif
 
+#ifdef CONFIG_FSL_CAAM
+	sec_init();
+#endif
+
 #ifdef CONFIG_FSL_LS_PPA
 	ppa_init();
 #endif