staging: slicoss: fix bare use of 'unsigned'

fix checkpatch.pl warning about 'Prefer 'unsigned int' to bare use of
'unsigned''

Signed-off-by: Clifton Barnes <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/slicoss/slicoss.c

···
 /*
  * Compute a checksum of the EEPROM according to RFC 1071.
  */
-static u16 slic_eeprom_cksum(void *eeprom, unsigned len)
+static u16 slic_eeprom_cksum(void *eeprom, unsigned int len)
 {
 	u16 *wp = eeprom;
 	u32 checksum = 0;