app: aboot: Do not rely on the tampered flag to authenticate kernel.

Modify the boot flow to not rely on tampered flag when authenticating
kernel.

CRs-Fixed: 501721

Change-Id: Iac9c94606172e8855292e713a53bf2fa0f14e79e
diff --git a/app/aboot/aboot.c b/app/aboot/aboot.c
index d732a4e..71d6abe 100644
--- a/app/aboot/aboot.c
+++ b/app/aboot/aboot.c
@@ -696,7 +696,7 @@
 		device.is_unlocked,
 		device.is_tampered);
 
-	if(target_use_signed_kernel() && (!device.is_unlocked) && (!device.is_tampered))
+	if(target_use_signed_kernel() && (!device.is_unlocked))
 	{
 		offset = 0;
 
@@ -984,7 +984,7 @@
 #endif
 
 	/* Authenticate Kernel */
-	if(target_use_signed_kernel() && (!device.is_unlocked) && (!device.is_tampered))
+	if(target_use_signed_kernel() && (!device.is_unlocked))
 	{
 		image_addr = (unsigned char *)target_get_scratch_address();
 		offset = 0;