sm8550-common: Enable compilation of init_boot partition

Devices launching with Android 13 or higher and shipping with
Android 13 must have an init_boot static partition. The generic
ramdisk is no longer be contained in the boot.img file that goes
in the boot partition. This generic ramdisk will be placed in a
new init_boot.img to be installed in a new init_boot partition.

Change-Id: I0434ef0cee209bb7709474c6db15b2c4fcb40a03

BoardConfigCommon.mk

@@ -12,6 +12,7 @@ AB_OTA_UPDATER := true
 AB_OTA_PARTITIONS += \
     boot \
     dtbo \
+    init_boot \
     odm \
     product \
     recovery \
@@ -49,6 +50,10 @@ TARGET_BOOTLOADER_BOARD_NAME := kalama
 # DTB
 BOARD_INCLUDE_DTB_IN_BOOTIMG := true
 
+# Init Boot
+BOARD_INIT_BOOT_HEADER_VERSION := 4
+BOARD_MKBOOTIMG_INIT_ARGS += --header_version $(BOARD_INIT_BOOT_HEADER_VERSION)
+
 # Kernel
 BOARD_BOOTCONFIG := \
     androidboot.hardware=qcom \
@@ -67,6 +72,7 @@ BOARD_USES_METADATA_PARTITION := true
 # Partitions
 BOARD_BOOTIMAGE_PARTITION_SIZE := 100663296
 BOARD_DTBOIMG_PARTITION_SIZE := 16777216
+BOARD_INIT_BOOT_IMAGE_PARTITION_SIZE := 8388608
 BOARD_RECOVERYIMAGE_PARTITION_SIZE := 109051904
 BOARD_VENDOR_BOOTIMAGE_PARTITION_SIZE := 100663296