Acer Headset: Merged headset/button driver

This drives goes to a greater length to prevent KEY_MEDIA press on
insert/removal. It is functionally equivalent to Acer code in all the other
aspects. Fixes #7.
Cleanup: Disable debug
defconfig: Remove CONFIG_ACER_HEADSET_BUTT
Merge branch 'froyo_almond-acer_a1-headset' into testing
Acer Headset: Merged headset/button driver

This drives goes to a greater length to prevent KEY_MEDIA press on
insert/removal. It is functionally equivalent to Acer code in all the other
aspects. Fixes #7.
defconfig: Remove CONFIG_ACER_HEADSET_BUTT
Cleanup: Remove duplicate code and lcm v1 support

LCM v1 (v0?) was only used in engineering samples and should not be available to
the general public, therefore remove the support and initialization code.
Merge branch 'froyo_almond-acer_a1-headset' into froyo_almond-acer_a1
Merge branch 'auo_cleanup' into froyo_almond-acer_a1
README: Add the link to pre-built images