omap2+: mux: Fix compile when CONFIG_OMAP_MUX is not selected

Fix compile when CONFIG_OMAP_MUX is not selected

Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/board-devkit8000.c b/arch/arm/mach-omap2/board-devkit8000.c
index 728f27c..472a25b 100644
--- a/arch/arm/mach-omap2/board-devkit8000.c
+++ b/arch/arm/mach-omap2/board-devkit8000.c
@@ -625,6 +625,7 @@
 	.reset_gpio_port[2]  = -EINVAL
 };
 
+#ifdef CONFIG_OMAP_MUX
 static struct omap_board_mux board_mux[] __initdata = {
 	/* nCS and IRQ for Devkit8000 ethernet */
 	OMAP3_MUX(GPMC_NCS6, OMAP_MUX_MODE0),
@@ -778,6 +779,7 @@
 
 	{ .reg_offset = OMAP_MUX_TERMINATOR },
 };
+#endif
 
 static void __init devkit8000_init(void)
 {