it821x.c: use dev->revision instead of pci_read_config_byte
it821x.c: use dev->revision instead of pci_read_config_byte

Minor cleanup.

Signed-off-by: Brandon Philips <766d97c0853d0742ad1f5c01d421baa45bb9b60e@suse.de>
Cc: Alan Cox <91e38e63b890fbb214c8914809fde03c73e7f24d@lxorguk.ukuu.org.uk>
Cc: Shawn Lin <443646d156d0e0db4e143fd54251ca15b42bcccb@dmp.com.tw>
Signed-off-by: Bartlomiej Zolnierkiewicz <248de9df611a028e5eceb9d893a2ed6c24c89ef4@gmail.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs