ASoC: Davinci: McASP: remove unused header include

Defines or parameters from <mach/mux.h> isn't used anywhere. Hence
remove the header include.
Signed-off-by: NHebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/davinci/davinci-evm.c

@@ -24,7 +24,6 @@
 
 #include <mach/asp.h>
 #include <mach/edma.h>
-#include <mach/mux.h>
 
 #include "davinci-pcm.h"
 #include "davinci-i2s.h"