fix(zynqmp): modify conditions to have boolean type

This corrects the MISRA violation C2012-14.4:
The controlling expression of an if statement and the controlling
expression of an iteration-statement shall have essentially
boolean type.
Updated controlling expression to explicitly compare with zero.

Change-Id: I5bf7070db9bced50f5d37a3d9406301585930b50
Signed-off-by: Nithin G <nithing@amd.com>
Signed-off-by: Maheedhar Bollapalli <maheedharsai.bollapalli@amd.com>
7 files changed