staging: wilc1000: rename camelCase used in functions start with WILC_WFI_Cfg

This is cleanup patch, to fix the camelCase issue reported by
checkpatch.pl.
In this patch remane the function starts with "WILC_WFI_Cfg" to avoid
camelCase names.

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>