fix cd problem in package() for armsoc-git

alarm/xf86-video-armsoc-git/PKGBUILD

@@ -13,7 +13,7 @@ pkgver() {
 	echo $(git rev-list --count makepkg).$(git rev-parse --short makepkg)
 }
 epoch=1
-pkgrel=1
+pkgrel=2
 arch=('armv7h')
 url="http://git.chromium.org/gitweb/?p=chromiumos/third_party/xf86-video-armsoc.git;a=summary"
 license=('GPL2')
@@ -24,14 +24,13 @@ replaces=(xf86-video-armsoc)
 provides=(xf86-video-armsoc)
 
 source=('compat_post_X_1.13.patch'
-		"git+http://git.chromium.org/git/chromiumos/third_party/xf86-video-armsoc.git#commit=47a3271")
+		"$pkgname::git+http://git.chromium.org/git/chromiumos/third_party/xf86-video-armsoc.git#commit=47a3271")
 
 md5sums=('12ccb37f9bdfe2e920d95a2cca832295'
          'SKIP')
-_gitname="xf86-video-armsoc"
 
 prepare() {
-  cd "$srcdir/$_gitname"
+  cd "$srcdir/$pkgname"
   msg "Patching source..."
   # X 1.13 compatibility from the Linaro upstream
   git apply ${srcdir}/compat_post_X_1.13.patch
@@ -46,8 +45,7 @@ build() {
 package() {
   pkgdesc="armsoc framebuffer driver for X from chromium os git"
 
-  cd "${srcdir}/${pkgname}"
 
-  make DESTDIR="${pkgdir}" install
+  make -C "$srcdir/$pkgname" DESTDIR="${pkgdir}" install
 }