musl: fixed parse-config-9 to not map the linux-header package to the linux package

Applying libc-compat.h related patches to the kernel itself breaks the build.
It doesn't really make much sense to do that anyway because it is highly
unlikely that there will be any musl dpecific patch for the kernel itself.

base/musl/parse-config-9

@@ -198,8 +198,6 @@ if [ "$SDECFG_LIBC" == "musl" ]; then
 
 	# same package translations to look for patches
 	case "$pkg" in
-		linux*|linux-header)
-			pkg_musl_pkg=linux ;;
 		*)
 			pkg_musl_pkg=${pkg} ;;
 	esac