fix(plat/xilinx/versal): resolve misra R20.7 in pm services

MISRA Violation: MISRA-C:2012 R.20.7
- Expressions resulting from the expansion of macro parameters shall be
  enclosed in parentheses

Signed-off-by: Abhyuday Godhasara <abhyuday.godhasara@xilinx.com>
Change-Id: Id913c556cab955c798809ad2bd08ca3e48e2231a
1 file changed