common: fsl: Fix broken SPDX-License-Identifier change

This bug was introduced by:
"Add GPL-2.0+ SPDX-License-Identifier to source files"
(sha1: 1a4596601fd395f3afb8f82f3f840c5e00bdd57a)

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
microblaze: Fix watchdog initialization

The patch:
"blackfin: Move blackfin watchdog driver out of the blackfin arch folder."
(sha1: e9a389a18477c1c57a0b30e9ea8f4d38c6e26e63)
changed hw_watchdog_init() prototype which didn't match
with Microblaze one.
This patch fixes the driver and Microblaze initialization.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>