arm64: zynqmp: Fix gpio comment about No of gpios

There are total 174 gpios but from 0 - 173 that's why fix comment to
reflect it.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/c7e94b334e7dd6297e0d3a36a6a3d04bd7e9e967.1688992653.git.michal.simek@amd.com
10 files changed