thermal: lmh_debug: Add braces around suspicious indented code

Newer GCCs complain about the indent on this code. Add braces
around the code intended to be executed if the condition is true
to silence the warning.

Change-Id: I2ac2d779b98df02f10e70d97b01efbf340f6b238
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>