Update wl12xx firmware to TI release R5.SP3.06

Old firmware version: 6.3.10.0.132
New firmware version: 6.3.10.0.133

Downloaded from:
http://git.omapzoom.org/?p=device/ti/proprietary-open.git;a=blob;f=wl12xx/wlan/wlan.tgz;h=3e53785dc1d5f54c07e7b45deaee7bd25adb6fa7;hb=3dd2bed395fde43917ed756efa7e62d7294110f4
via
http://review.omapzoom.org/#/c/30987/

Change-Id: I353dde4d9f8943d932189f179f0427b5d25c7378
Add libasound.so and conf files to prebuilts

These don't really belong with the vendor blobs -- they're built from
source (and in fact, the copies being committed are built directly from
a CM 10.1 source tree -- they're prebuilt for now to avoid having to
re-add external/alsa-lib to the CyanogenMod project).

Change-Id: Idb36a3805f119f5bbe356d6957f7b62f73be0390
proprietary-files.txt: remove libasound.so and other audio cruft

This stuff is either unnecessary or now residing in device/bn/encore.

Change-Id: Ia66795db44582d8c2708ebf7fac6fbb620b99817