[MTK] How To enable AVB for Q

How To enable AVB  for Q

1./vendor/mediatek/proprietary/bootable/bootloader/lk/target/${project}/inc/avbkey.h

在该文件里配置与/device/mediatek/common/oem_prvk.pem （其中oem_prvk.pem为用openssl生成的private key）对应的public key

2.alps/device/mediatek/common/device.mk

BOARD_AVB_ENABLE:=True

BOARD_AVB_ALGORITHM := SHA256_RSA2048

BOARD_AVB_KEY_PATH := device/mediatek/common/oem_prvk.pem

3./kernel-4.14/drivers/misc/mediatek/masp/

MTK_AVB20_SUPPORT default y

5.alps/vendor/mediate/proprietary/bootable/bootloader/lk/platform/${PLATFORM}/rules.mk

MTK_AVB20_SUPPORT=yes
AVB_SHA256_CRYPTO_HW_SUPPORT := yes

4./device/mediatek/common/device.mk

可选:Recovery设置为chain partition的配置

    SET_RECOVERY_AS_CHAIN ?= yes