ARM: includecheck fix: mach-omap2/mcbsp.c

fix the following 'make includecheck' warning:

  arch/arm/mach-omap2/mcbsp.c: mach/irqs.h is included more than once.
Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: NEduardo Valentin <eduardo.valentin@nokia.com>
Acked-by: NKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-omap2/mcbsp.c

@@ -19,7 +19,6 @@
 
 #include <mach/irqs.h>
 #include <mach/dma.h>
-#include <mach/irqs.h>
 #include <mach/mux.h>
 #include <mach/cpu.h>
 #include <mach/mcbsp.h>