configs: ae350: Enable v5l2 cache for AE350 platforms in SPL

To reduce the code size, CONFIG_V5L2_CACHE was disabled since commit:
ca06444aac2c643db3a3f2eb37afc60fae15177e

Turing on does not significantly increase the size of u-boot-spl.bin,
so we enable it by default to improve performance.

Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Rick Chen <rick@andestech.com>
diff --git a/configs/ae350_rv64_spl_xip_defconfig b/configs/ae350_rv64_spl_xip_defconfig
index 4cbfd52..c44df4b 100644
--- a/configs/ae350_rv64_spl_xip_defconfig
+++ b/configs/ae350_rv64_spl_xip_defconfig
@@ -23,6 +23,8 @@
 CONFIG_BOARD_EARLY_INIT_F=y
 CONFIG_SPL_MAX_SIZE=0x100000
 CONFIG_SPL_BSS_START_ADDR=0x4000000
+CONFIG_SPL_BOARD_INIT=y
+CONFIG_SPL_CACHE=y
 CONFIG_SYS_PBSIZE=1050
 CONFIG_SYS_BOOTM_LEN=0x4000000
 CONFIG_CMD_IMLS=y