Fix compile error (torvalds#26)

Multiple definition error due to midgard and bifrost both selected

Author: mrfixit2001

arch/arm64/configs/rockchip_linux_defconfig

@@ -879,12 +879,7 @@ CONFIG_MALI_EXPERT=y
 CONFIG_MALI_PLATFORM_THIRDPARTY=y
 CONFIG_MALI_PLATFORM_THIRDPARTY_NAME="rk"
 CONFIG_MALI_DEBUG=y
-CONFIG_MALI_BIFROST_FOR_LINUX=y
-CONFIG_MALI_BIFROST=y
-CONFIG_MALI_BIFROST_DEVFREQ=y
 CONFIG_MALI_PLATFORM_NAME="rk"
-CONFIG_MALI_BIFROST_EXPERT=y
-CONFIG_MALI_BIFROST_DEBUG=y
 CONFIG_MALI_PWRSOFT_765=y
 CONFIG_BACKLIGHT_LCD_SUPPORT=y
 # CONFIG_LCD_CLASS_DEVICE is not set