linux: linux-4.19.57 Switch CONFIG_FB to dynamic

Switch CONFIG_FB to dynamic ("m"), which is defaulted.

The two other changes in the minimal config (CONFIG_FB_EFI and
CONFIG_BACKLIGHT_CLASS_DEVICE) are not actual changes in the
configuration but a result of changed defaults.

linux-4.19.57-282.bee

@@ -665,13 +665,11 @@ mee_configure() {
 	CONFIG_DRM_CIRRUS_QEMU=m
 	CONFIG_DRM_BOCHS=m
 	CONFIG_DRM_TINYDRM=m
-	CONFIG_FB=y
 	CONFIG_FB_CIRRUS=m
 	CONFIG_FB_PM2=m
 	CONFIG_FB_CYBER2000=m
 	CONFIG_FB_ARC=m
 	CONFIG_FB_VGA16=m
-	CONFIG_FB_EFI=y
 	CONFIG_FB_NVIDIA=m
 	CONFIG_FB_NVIDIA_I2C=y
 	CONFIG_FB_NVIDIA_DEBUG=y
@@ -689,6 +687,7 @@ mee_configure() {
 	CONFIG_FB_UDL=m
 	CONFIG_FB_IBM_GXT4500=m
 	CONFIG_LCD_PLATFORM=m
+	CONFIG_BACKLIGHT_CLASS_DEVICE=y
 	CONFIG_BACKLIGHT_CARILLO_RANCH=m
 	CONFIG_BACKLIGHT_APPLE=m
 	CONFIG_BACKLIGHT_PM8941_WLED=m