build: avoid including profiles/*.mk

Generate the active profile name in menuconfig context

Signed-off-by: Felix Fietkau <nbd@nbd.name>

scripts/metadata.pl

@@ -337,6 +337,18 @@ EOF
 		}
 	}
 	print <<EOF;
+config TARGET_PROFILE
+	string
+EOF
+	foreach my $target (@target) {
+		my $profiles = $target->{profiles};
+		foreach my $profile (@$profiles) {
+			print "\tdefault \"$profile->{id}\" if TARGET_$target->{conf}_$profile->{id}\n";
+		}
+	}
+
+	print <<EOF;
+
 config TARGET_ARCH_PACKAGES
 	string