staging: wilc1000: rename 'during_ip_time' macro to have uppercase name for macro

Rename 'during_ip_time' to 'DURING_IP_TIME_OUT' to have uppercase letter
for macros(#define).

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