Merge Chromecast v1.3 release

Merge https://code.google.com/p/chromecast-mirrored-source.kernel/
changes into repo
Fix missing line in mach-berlin Kconfig

forgot the help line which caused some fun errors.
Fix a few whitespace issues
Revert "disable wext"

Apparently, this change breaks hotspot creation with a stock userspace.

This reverts commit 13ca8e246f920b45b6dc6f74a7502fbf7e61dcc3.