utils/check-package: check files in support/

The .mk files inside both support/dependencies and support/misc are not
package recipes, similar to package/pkg-*.mk. The check-package don't
apply to them. Therefore ignore such files.

In the test infra, some br2-externals are used as fixtures to provide
(sometimes) failure cases, so ignore files in these directories.

Files inside support/kconfig are files copied from linux upstream, so do
not generate warnings for them.

support/gnuconfig contains auto-generated config.{guess,sub} files,
so do not generate shellcheck warnings for them.

Signed-off-by: Ricardo Martincoski <ricardo.martincoski@gmail.com>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>

utils/check-package

@@ -112,6 +112,7 @@ DO_CHECK_INTREE = re.compile(r"|".join([
     r"fs/",
     r"linux/",
     r"package/",
+    r"support/",
     r"system/",
     r"toolchain/",
     r"utils/",
@@ -121,6 +122,11 @@ DO_NOT_CHECK_INTREE = re.compile(r"|".join([
     r"fs/common\.mk$",
     r"package/doc-asciidoc\.mk$",
     r"package/pkg-\S*\.mk$",
+    r"support/dependencies/[^/]+\.mk$",
+    r"support/gnuconfig/config\.",
+    r"support/kconfig/",
+    r"support/misc/[^/]+\.mk$",
+    r"support/testing/tests/.*br2-external/",
     r"toolchain/helpers\.mk$",
     r"toolchain/toolchain-external/pkg-toolchain-external\.mk$",
     ]))