alcatel-pop7lte: update APKBUILD to pass linting

Signed-off-by: Lauren Kelly <lauren.kelly@msn.com>

device/testing/linux-alcatel-pop7lte/APKBUILD

@@ -25,9 +25,9 @@ fi
 # Source
 _repository="android_kernel_alcatel_pop7lte"
 _commit="675e8a12526fad083d93e3d2ddab65e2b2be7861"
-_config="config-${_flavor}.${arch}"
+_config="config-$_flavor.$arch"
 source="
-	$pkgname-$_commit.tar.gz::https://github.com/thejsa/${_repository}/archive/${_commit}.tar.gz
+	$pkgname-$_commit.tar.gz::https://github.com/thejsa/$_repository/archive/$_commit.tar.gz
 	$_config
 	gcc7-give-up-on-ilog2-const-optimizations.patch
 	gcc8-fix-put-user.patch
@@ -36,7 +36,7 @@ source="
 	fix-fdinfo-file-handling.patch
 	0001-fix-video-argb-setting.patch
 "
-builddir="$srcdir/${_repository}-${_commit}"
+builddir="$srcdir/$_repository-$_commit"
 
 prepare() {
 	default_prepare