staging: wilc1000: define macros to replace magic number values

Define macros for global as well as SPI/SDIO specific register to avoid
use of magic numbers.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-9-ajay.kathat@microchip.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>