ramips: Add missing andmask to ramips_esw register read for recv_good value.

ramips: Add missing andmask to ramips_esw register read for recv_good value.

Add missing andmask to ramips_esw register read for recv_good value.

Without the mask, recv_bad leaks into the recv_good packet count.
Didn't notice the bug before since you don't usually get bad
packets, so I only saw it when I was playing with overlength packets
earlier...

Signed-off-by: Tobias Diedrich <ranma+openwrt@tdiedrich.de>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@33322 3c298f89-4303-0410-b956-a3cf2f4a3e73