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-cm-t3517.c b/arch/arm/mach-omap2/board-cm-t3517.c
index 9da6e82..4c737e4 100644
--- a/arch/arm/mach-omap2/board-cm-t3517.c
+++ b/arch/arm/mach-omap2/board-cm-t3517.c
@@ -260,6 +260,7 @@
 	omap2_init_common_devices(NULL, NULL);
 }
 
+#ifdef CONFIG_OMAP_MUX
 static struct omap_board_mux board_mux[] __initdata = {
 	/* GPIO186 - Green LED */
 	OMAP3_MUX(SYS_CLKOUT2, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
@@ -285,6 +286,7 @@
 
 	{ .reg_offset = OMAP_MUX_TERMINATOR },
 };
+#endif
 
 static void __init cm_t3517_init(void)
 {