omap: Keep nwires for omap1 and 2420 MMC controller

A patch from Sukumar Ghorai <s-ghorai@ti.com> changed the
nwires to use caps instead. However, nwires is still
needed for the earlier controller.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Sukumar Ghorai <s-ghorai@ti.com>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
index 7a93bd5..8fd2269 100644
--- a/arch/arm/mach-omap2/board-n8x0.c
+++ b/arch/arm/mach-omap2/board-n8x0.c
@@ -488,7 +488,7 @@
 	.max_freq			= 24000000,
 	.dma_mask			= 0xffffffff,
 	.slots[0] = {
-		.caps			= MMC_CAP_4_BIT_DATA,
+		.wires			= 4,
 		.set_power		= n8x0_mmc_set_power,
 		.set_bus_mode		= n8x0_mmc_set_bus_mode,
 		.get_cover_state	= n8x0_mmc_get_cover_state,