staging: wilc1000: fix line over 80 characters in wilc_spi_init()

Modified wilc_spi_init() to fix the line over 80 char issues reported
by checkpatch.pl script.
To overcome the checkpatch.pl reported issue modified debug logs and
comments used in wilc_spi_init().

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