overlaycheck: Compile all overlays before merging

The possibility of renaming an overlay means that it isn't safe to
try merging them as they are compiled, just in case the new overlay
has not been compiled yet.

Signed-off-by: Phil Elwell <[email protected]>

Author: pelwell

overlaycheck/overlaycheck

@@ -322,7 +322,11 @@ foreach my $overlay (sort(keys(%$source)))
         error("  Error ^ in overlay $overlay\n");
     }
     dtc_cpp("${overlay}-overlay.dts", "$TMPDIR/$overlay.dtbo");
+}
 
+foreach my $overlay (sort(keys(%$source)))
+{
+    next if ($overlay =~ /^</);
     my $overlay_props = $source->{$overlay}[0];
     my $base;
     while (my ($plat, $dts) = each(%platform_reps))