rk3308_linux_defconfig: support ram block device and loopback device

Signed-off-by: Stephen <[email protected]>

arch/arm64/configs/rk3308_linux_defconfig

@@ -97,7 +97,11 @@ CONFIG_RFKILL=y
 CONFIG_DEVTMPFS=y
 CONFIG_DEVTMPFS_MOUNT=y
 # CONFIG_ALLOW_DEV_COREDUMP is not set
-# CONFIG_BLK_DEV is not set
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_CRYPTOLOOP=m
+CONFIG_BLK_DEV_NBD=m
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=1
 CONFIG_SCSI=y
 CONFIG_BLK_DEV_SD=y
 CONFIG_BLK_DEV_SR=y
@@ -385,3 +389,4 @@ CONFIG_CRYPTO_AES_ARM64_CE_CCM=y
 CONFIG_CRYPTO_AES_ARM64_CE_BLK=y
 CONFIG_CRYPTO_AES_ARM64_NEON_BLK=y
 CONFIG_CRYPTO_CRC32_ARM64=y
+CONFIG_LIBCRC32C=m