fix(zynqmp): resolve misra R16.3 warnings

MISRA Violation: MISRA-C:2012 R.16.3
- An unconditional break statement shall terminate every switch-clause.

Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@xilinx.com>
Change-Id: I96a8b627c593ff1293b725d443531e42368923c5