staging: wilc1000: remove use of MAX_NUN_INT_THRPT_ENH2 macro

Make use of MAX_NUM_INT existing macro to handle the maximum supported
interrupts count and removed MAX_NUN_INT_THRPT_ENH2 macro.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Link: https://lore.kernel.org/r/20200214172250.13026-3-ajay.kathat@microchip.com


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