user/xorg-drivers: don't install broken things on ARM

user/xorg-drivers/APKBUILD

@@ -16,9 +16,8 @@ depends="xf86-input-evdev xf86-input-joystick xf86-input-keyboard
 	xf86-video-dummy xf86-video-fbdev xf86-video-freedreno xf86-video-glint
 	xf86-video-mach64 xf86-video-mga xf86-video-nouveau
 	xf86-video-openchrome xf86-video-qxl xf86-video-r128
-	xf86-video-rendition xf86-video-siliconmotion xf86-video-sis
-	xf86-video-sisusb xf86-video-tdfx xf86-video-trident xf86-video-v4l
-	xf86-video-vboxvideo xf86-video-vesa xf86-video-vmware"
+	xf86-video-rendition xf86-video-sis xf86-video-sisusb xf86-video-tdfx
+	xf86-video-trident xf86-video-v4l xf86-video-vboxvideo xf86-video-vesa"
 case $CTARGET_ARCH in
 	pmmx)
 		depends="$depends xf86-video-geode xf86-video-intel" ;;
@@ -27,6 +26,12 @@ case $CTARGET_ARCH in
 	sparc*)
 		depends="$depends xf86-video-sunffb xf86-video-sunleo" ;;
 esac
+case $CTARGET_ARCH in
+	aarch64*|arm*)
+		;;
+	*)
+		depends="$depends xf86-video-siliconmotion xf86-video-vmware";;
+esac
 source=""
 
 package() {