bundle_firmware: add misc-rw to allowed region labels

Fixes building reef which uses that label.

BUG=none
BRANCH=none
TEST=emerge-reef chromeos-bootimage works again after sudo emerge
cros-devutils.

Change-Id: I4b421a0c0d834e4a808898823b696f83a3d67041
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://chromium-review.googlesource.com/382271
Reviewed-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-by: Patrick Georgi <pgeorgi@chromium.org>
Commit-Queue: Patrick Georgi <pgeorgi@chromium.org>
Tested-by: Patrick Georgi <pgeorgi@chromium.org>
diff --git a/host/lib/bundle_firmware.py b/host/lib/bundle_firmware.py
index e58dd3e..b0ab43b 100644
--- a/host/lib/bundle_firmware.py
+++ b/host/lib/bundle_firmware.py
@@ -1214,8 +1214,8 @@
             fdt_path = '/flash/ro-sig'
             fdt.PutString(fdt_path, 'type', 'blob sig2')
         # white list for empty regions
-        elif label in ['bootblock', 'ro-section', 'rw-environment', 'rw-gpt',
-                       'si-all', 'si-bios', 'si-me', 'wp-ro']:
+        elif label in ['bootblock', 'misc-rw', 'ro-section', 'rw-environment',
+		       'rw-gpt', 'si-all', 'si-bios', 'si-me', 'wp-ro']:
             pass
         else:
             raise ValueError('encountered label "'+label+'" in binary fmap. '+