ARM: multi_v7_defconfig: add NXP graphics drivers

Enable drivers to support NXP graphics IPs such as:
- Etnaviv (e.g. i.MX6)
- DCU (e.g. Vybrid LS1021A)
- mxsfb (e.g. i.MX6UL/ULL/7)
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/configs/multi_v7_defconfig

@@ -630,6 +630,7 @@ CONFIG_DRM_ATMEL_HLCDC=m
 CONFIG_DRM_RCAR_DU=m
 CONFIG_DRM_RCAR_LVDS=y
 CONFIG_DRM_SUN4I=m
+CONFIG_DRM_FSL_DCU=m
 CONFIG_DRM_TEGRA=y
 CONFIG_DRM_PANEL_SAMSUNG_LD9040=m
 CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0=m
@@ -637,6 +638,8 @@ CONFIG_DRM_PANEL_SIMPLE=y
 CONFIG_DRM_SII9234=m
 CONFIG_DRM_STI=m
 CONFIG_DRM_VC4=y
+CONFIG_DRM_ETNAVIV=m
+CONFIG_DRM_MXSFB=m
 CONFIG_FB_ARMCLCD=y
 CONFIG_FB_EFI=y
 CONFIG_FB_WM8505=y