rtl8192e: update for ndo_set_multicast_list removal.

rtl8192e: update for ndo_set_multicast_list removal.

After merging the staging tree, today's linux-next build (x86_64
allmodconfig) failed like this:

drivers/staging/rtl8192e/rtl_core.c:2917:2: error: unknown field 'ndo_set_multicast_list' specified in initializer

Caused by commit cc5d857430c2 ("From: wlanfae <wlanfae@realtek.com>" -
really "[PATCH 1/8] rtl8192e: Import new version of driver from realtek"

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>