platform: msm_shared: Validate boot image for VB2 verification

Remove condition to skip boot image validation.
As LK is incrementing num_loaded_images while
loading images, hence we are falling into the
condition which only need to be skipped in case
of fastboot boot.

Change-Id: Ie91dcab78f22fbdf2dad4a76862e173c6d5189a6
diff --git a/platform/msm_shared/avb/libavb/avb_util.h b/platform/msm_shared/avb/libavb/avb_util.h
index 07c3258..93046c8 100644
--- a/platform/msm_shared/avb/libavb/avb_util.h
+++ b/platform/msm_shared/avb/libavb/avb_util.h
@@ -37,6 +37,7 @@
 
 #define AVB_STRINGIFY(x) #x
 #define AVB_TO_STRING(x) AVB_STRINGIFY(x)
+#define AVB_ENABLE_DEBUG 1
 
 #ifdef AVB_ENABLE_DEBUG
 /* Aborts the program if |expr| is false.