main/mesa: build vc4 driver for arm

main/mesa/APKBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=mesa
 pkgver=10.6.5
-pkgrel=0
+pkgrel=1
 pkgdesc="Mesa DRI OpenGL library"
 url="http://www.mesa3d.org"
 arch="all"
@@ -31,6 +31,7 @@ source="ftp://ftp.freedesktop.org/pub/mesa/${pkgver}/mesa-$pkgver.tar.xz
 
 _dri_driverdir=/usr/lib/xorg/modules/dri
 _dri_drivers="r200,radeon,nouveau,swrast"
+_gallium_drivers="r300,r600,radeonsi,nouveau,svga,swrast"
 
 _builddir="$srcdir/mesa-$pkgver"
 
@@ -40,6 +41,9 @@ x86*)
 	_dri_drivers="${_dri_drivers},i915,i965"
 	subpackages="$subpackages $pkgname-dri-intel:intel"
 	;;
+arm*)
+	_gallium_drivers="${_gallium_drivers},vc4"
+	;;
 esac
 
 prepare() {
@@ -68,7 +72,7 @@ build() {
 		--disable-asm \
 		--disable-xvmc \
 		--enable-glx-rts \
-		--with-gallium-drivers=r300,r600,radeonsi,nouveau,svga,swrast \
+		--with-gallium-drivers=${_gallium_drivers} \
 		--with-dri-drivers=${_dri_drivers} \
 		--enable-llvm-shared-libs \
 		--enable-gallium-llvm \