power: reset: Fix Axxia DDR Retention for kernel 5.10

commit  52987bf1e26b4fe2c90ec140143a09903aea25b1 from
https://github.com/axxia/linux-yocto.git axxia-linux/v5.10/standard/axxia-dev/base

drivers/power/reset/axxia-reset.c:109:18: error: passing argument 4
   of 'proc_create' from incompatible pointer type
   [-Werror=incompatible-pointer-types]

Signed-off-by: Mikael Beckius <mikael.beckius@windriver.com>
Signed-off-by: Daniel Dragomir <Daniel.Dragomir@windriver.com>
Signed-off-by: John Jacques <john.jacques@intel.com>
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>