[PATCH] drm/ingenic: Kconfig: select REGMAP and REGMAP_MMIO

[Sui Jingfeng]

Otherwise its failed to pass basic compile test on platform without
REGMAP_MMIO selected by defconfig

make -j$(nproc) ARCH=mips CROSS_COMPILE=mips64el-linux-gnuabi64-

  SYNC    include/config/auto.conf.cmd
  Checking missing-syscalls for N32
  CALL    scripts/checksyscalls.sh
  Checking missing-syscalls for O32
  CALL    scripts/checksyscalls.sh
  CALL    scripts/checksyscalls.sh
  MODPOST Module.symvers
ERROR: modpost: "__devm_regmap_init_mmio_clk" [drivers/gpu/drm/ingenic/ingenic-drm.ko] undefined!
make[1]: *** [scripts/Makefile.modpost:136: Module.symvers] Error 1
make: *** [Makefile:1978: modpost] Error 2

Signed-off-by: Sui Jingfeng <suijingfeng at loongson.cn>
---
 drivers/gpu/drm/ingenic/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/ingenic/Kconfig b/drivers/gpu/drm/ingenic/Kconfig
index a53f475d33df..7457c0b65034 100644
--- a/drivers/gpu/drm/ingenic/Kconfig
+++ b/drivers/gpu/drm/ingenic/Kconfig
@@ -5,6 +5,8 @@ config DRM_INGENIC
 	depends on CMA
 	depends on OF
 	depends on COMMON_CLK
+	select REGMAP
+	select REGMAP_MMIO
 	select DRM_BRIDGE
 	select DRM_PANEL_BRIDGE
 	select DRM_KMS_HELPER
-- 
2.25.1