net: sxgbe: Added rxqueue enable function

This patch adds rxqueue enable function according to number of rxqueue
and adds rxqueue disable function for removing.

Signed-off-by: Byungho An <bh74.an@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_common.h
Simple merge

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_core.c
Simple merge

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_main.c
Simple merge

diff --cc drivers/net/ethernet/samsung/sxgbe/sxgbe_reg.h
Simple merge