[source] kernel: fix builds with kmod-drm-vc4 and CONFIG_SPI enabled

[LEDE Commits]

rmilecki pushed a commit to source.git, branch master:
https://git.lede-project.org/bf381f8f6372d458c5d67dbba88155fc6d48802e

commit bf381f8f6372d458c5d67dbba88155fc6d48802e
Author: Rafał Miłecki <rafal at milecki.pl>
AuthorDate: Wed Mar 22 12:22:33 2017 +0100

    kernel: fix builds with kmod-drm-vc4 and CONFIG_SPI enabled
    
    This fixes:
    Samsung LD9040 RGB/SPI panel (DRM_PANEL_SAMSUNG_LD9040) [N/m] (NEW) aborted!
    
    Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
---
 target/linux/generic/config-4.9 | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/target/linux/generic/config-4.9 b/target/linux/generic/config-4.9
index c8665bb..7b56b4f 100644
--- a/target/linux/generic/config-4.9
+++ b/target/linux/generic/config-4.9
@@ -1081,8 +1081,10 @@ CONFIG_DQL=y
 # CONFIG_DRM_NXP_PTN3460 is not set
 # CONFIG_DRM_OMAP is not set
 # CONFIG_DRM_PANEL_JDI_LT070ME05000 is not set
+# CONFIG_DRM_PANEL_LG_LG4573 is not set
 # CONFIG_DRM_PANEL_PANASONIC_VVX10F034N00 is not set
 # CONFIG_DRM_PANEL_RASPBERRYPI_TOUCHSCREEN is not set
+# CONFIG_DRM_PANEL_SAMSUNG_LD9040 is not set
 # CONFIG_DRM_PANEL_SAMSUNG_S6E8AA0 is not set
 # CONFIG_DRM_PANEL_SHARP_LQ101R1SX01 is not set
 # CONFIG_DRM_PANEL_SHARP_LS043T1LE01 is not set