fix(plat/xilinx/versal): resolve misra R16.3 in pm services

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

Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@xilinx.com>
Change-Id: I576b2c6eb7d1b7ef20440b9a616886ccf230b63e
1 file changed