staging: mt7621-pci: fix register to set up virtual bridges

Instead of being using PCI Configuration and Status Register to
set up virtual bridges we are using CONFIG_ADDR Register which is
wrong. Hence, set the correct value.

Fixes: 9a5e71a6 ("staging: mt7621-pci: simplify 'mt7621_pcie_init_virtual_bridges' function")
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Link: https://lore.kernel.org/r/20200319095733.1557-1-sergio.paracuellos@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-pci/pci-mt7621.c

@@ -603,7 +603,7 @@ static int mt7621_pcie_init_virtual_bridges(struct mt7621_pcie *pcie)
 		if ((pcie_link_status & BIT(i)) == 0)
 			p2p_br_devnum[i] = n++;
 
-	pcie_rmw(pcie, RALINK_PCI_CONFIG_ADDR,
+	pcie_rmw(pcie, RALINK_PCI_PCICFG_ADDR,
 		 PCIE_P2P_BR_DEVNUM_MASK_FULL,
 		 (p2p_br_devnum[0] << PCIE_P2P_BR_DEVNUM0_SHIFT) |
 		 (p2p_br_devnum[1] << PCIE_P2P_BR_DEVNUM1_SHIFT) |