llvm showing warning when logical not is only applied
to the left hand side of the bitwise operator.
Use proper logical not condition to fix compilation 
error with llvm.

Change-Id: Ie7f3a549a72e46a5d230d3ae10f879b5f6f32b27
Signed-off-by: Naitik Bharadiya <bharad@codeaurora.org>