net: rtl8139: Minor cleanup of rtl_poll()

Rename the function to rtl8139_recv(), clean up various checkpatch errors,
line-over-80 conditions, and malformed comments. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
1 file changed