x264: Fix patch SHA1 mismatch

In formula "x264" patch https://github.com/DarkShikari/x264-devel/commit/bc3b27.patch has ```6c3d1bc241c64d8df64273df403d43e3116bd567 ``` sha1, but actually this file has ```3a156908998c6c8588e4f50d125fa1cfe8a1eba7```. So installing from source fails.