libdrm: skip the generic version check for the whole package

libdrm-tests ships DRM tools (modetest, proptest, ...) with no --version flag,
so the generic probe aborts with "No executables in the package provided
version" and fails CI. test-version.sh is shared by every subpackage built from
this directory and a non-zero exit fails it, so it must accept the whole family
(the libraries ship no executables either) -- hence libdrm*, not just libdrm-tests.

Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>

libs/libdrm/test-version.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# shellcheck shell=busybox
+
+# libdrm-tests ships DRM tools (modetest, ...) with no --version flag; the other
+# subpackages ship no executables. Skip the version probe for the whole family.
+case "$PKG_NAME" in
+libdrm*)
+	exit 0
+	;;
+
+*)
+	echo "Untested package: $PKG_NAME" >&2
+	exit 1
+	;;
+esac