drivers/intel/gma/Kconfig: Simplify Skylake/Kaby Lake conditions

Use `SOC_INTEL_COMMON_SKYLAKE_BASE` to simplify conditions.

Change-Id: Ie69bde31b58bbd973db00bd578a51477c5b21cab
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52704
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Timofey Komarov <happycorsair@yandex.ru>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by:  Felix Singer <felixsinger@posteo.net>
diff --git a/src/drivers/intel/gma/Kconfig b/src/drivers/intel/gma/Kconfig
index b001fd3..bc96846 100644
--- a/src/drivers/intel/gma/Kconfig
+++ b/src/drivers/intel/gma/Kconfig
@@ -84,9 +84,9 @@
 	def_bool y
 	depends on NORTHBRIDGE_INTEL_GM45 || NORTHBRIDGE_INTEL_X4X \
 		|| NORTHBRIDGE_INTEL_IRONLAKE || NORTHBRIDGE_INTEL_SANDYBRIDGE \
-		|| NORTHBRIDGE_INTEL_HASWELL \
-		|| SOC_INTEL_BROADWELL || SOC_INTEL_SKYLAKE || SOC_INTEL_APOLLOLAKE \
-		|| SOC_INTEL_KABYLAKE || SOC_INTEL_COFFEELAKE \
+		|| NORTHBRIDGE_INTEL_HASWELL || SOC_INTEL_BROADWELL \
+		|| SOC_INTEL_COMMON_SKYLAKE_BASE || SOC_INTEL_APOLLOLAKE \
+		|| SOC_INTEL_COFFEELAKE \
 		|| SOC_INTEL_WHISKEYLAKE || SOC_INTEL_COMETLAKE
 	depends on MAINBOARD_USE_LIBGFXINIT || INTEL_GMA_LIBGFXINIT_EDID
 	select RAMSTAGE_LIBHWBASE
@@ -113,7 +113,7 @@
 config GFX_GMA_GENERATION
 	string
 	default "Broxton" if SOC_INTEL_APOLLOLAKE
-	default "Skylake" if SOC_INTEL_SKYLAKE || SOC_INTEL_KABYLAKE || \
+	default "Skylake" if SOC_INTEL_COMMON_SKYLAKE_BASE || \
 				SOC_INTEL_COFFEELAKE || SOC_INTEL_WHISKEYLAKE || \
 				SOC_INTEL_COMETLAKE
 	default "Haswell" if NORTHBRIDGE_INTEL_HASWELL || SOC_INTEL_BROADWELL