ASoC: soc: msm: initialize buffer to prevent kernel data leakage

To prevent potential kernel stack data leakage, initialize
channel_map[].

CRs-Fixed: 1100878
CAF-Change-Id: I7b81cea20485bc7514551672bb54c7fd455049e3
Signed-off-by: Xiaojun Sang <xsang@codeaurora.org>
CVE-2016-5347
[haggertk]: Backport to 3.4/msm8974
 * Same logic in our msm-pcm-routing-v2.c as opposed to original
   msm-qti-pp-config.c

Change-Id: Iea0b630d1785e03d16da2d4f651846ab06d73e23
1 file changed