ASoC: OMAP: mcbsp fixes for enabling ARM multiplatform support

We cannot include any plat or mach headers for the multiplatform
support.

Fix the issue by defining local mcbsp_omap1().

Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
index afb8d4f..a9a2438 100644
--- a/sound/soc/omap/mcbsp.c
+++ b/sound/soc/omap/mcbsp.c
@@ -28,8 +28,6 @@
 
 #include <linux/platform_data/asoc-ti-mcbsp.h>
 
-#include <plat/cpu.h>
-
 #include "mcbsp.h"
 
 static void omap_mcbsp_write(struct omap_mcbsp *mcbsp, u16 reg, u32 val)
@@ -612,7 +610,7 @@
 	 * system will refuse to enter idle if the CLKS pin source is not reset
 	 * back to internal source.
 	 */
-	if (!cpu_class_is_omap1())
+	if (!mcbsp_omap1())
 		omap2_mcbsp_set_clks_src(mcbsp, MCBSP_CLKS_PRCM_SRC);
 
 	spin_lock(&mcbsp->lock);