Add build and run configs to exercise ARM_LINUX_KERNEL_AS_BL33 feature

This patch also adds test configurations that boot Linux kernel
directly without a normal world bootloader such as U-Boot

Refer to the following patches which fix the false dependency of
ARM_LINUX_KERNEL_AS_BL33 on RESET_TO_BL31 feature:

https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/8353
https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/8352

Signed-off-by: Madhukar Pappireddy <madhukar.pappireddy@arm.com>
Change-Id: I2eb1dfcc3ee6b4417a887c0bd3840f3d9da20dd0
diff --git a/script/build_package.sh b/script/build_package.sh
index f4ea34b..1bfaee2 100755
--- a/script/build_package.sh
+++ b/script/build_package.sh
@@ -412,9 +412,12 @@
 # Update hw-config in FIP, and remove the original DTB afterwards.
 update_fip_hw_config() {
 	# The DTB needs to be loaded by the model (and not updated in the FIP)
-	# in configs where BL2 isn't present
+	# in configs:
+	#            1. Where BL2 isn't present
+	#            2. Where we boot to Linux directly as BL33
 	case "1" in
 		"$(get_tf_opt RESET_TO_BL31)" | \
+		"$(get_tf_opt ARM_LINUX_KERNEL_AS_BL33)" | \
 		"$(get_tf_opt RESET_TO_SP_MIN)" | \
 		"$(get_tf_opt BL2_AT_EL3)")
 			return 0;;