staging: rtl8192u: replace __FUNCTION__ in r819xU_phy.c
staging: rtl8192u: replace __FUNCTION__ in r819xU_phy.c

This patch fixes the following checkpatch warning:
WARNING: __func__ should be used instead of gcc specific __FUNCTION__

Signed-off-by: Xenia Ragiadakou <f92ff8bbf231fc2849aa93c2318ee1296285b821@gmail.com>
Signed-off-by: Greg Kroah-Hartman <4645f7897fd33786a2ee1264d590b3c400559d85@linuxfoundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs