Mako: Revert msm_fb: remove background invert alpha option for alpha drop pipe

This fixes the pie controls visual glitch when launching apps on the mako and
is required for this http://review.cyanogenmod.org/#/c/35314/ to work.

This reverts: f4f9d28eac1024146c8b074742fcb6793523eb54
  When the blended background pipe has dropped alpha and it is going to
  be blended with foreground pipe on the next stage,
  MDP4_BLEND_BG_ALPHA_FG_CONST is taken. Foreground alpha constant is
  0xFF, so we need to use this alpha value to show background, instead
  of its inverted value.
  Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>

Change-Id: Ie70d1f27dae2751a1eea98fd145145d9b40f3d1d
perf: Treat attr.config as u64 in perf_swevent_init()

Trinity discovered that we fail to check all 64 bits of
attr.config passed by user space, resulting to out-of-bounds
access of the perf_swevent_enabled array in
sw_perf_event_destroy().

Introduced in commit b0a873ebb ("perf: Register PMU
implementations").

Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: davej@redhat.com
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Link: http://lkml.kernel.org/r/1365882554-30259-1-git-send-email-tt.rantala@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>