msm: defconfig: Disable section mismatch=y

Section mismatch shouldn't be enabled in any production builds
because it sets single use functions to be no-inline. Disable
this option. We still get section mismatch analysis, just not as
fine grained.

Change-Id: I8fc96cf8876d11a61ad067e1b75b81be307969e1
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>