[ARM] 4869/1: ARM: OMAP: Fix compile for mcbsp

Until DSP MMU code is merged, dsp_request_mem() does not exist.
Signed-off-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

include/asm-arm/arch-omap/dsp_common.h

@@ -24,11 +24,17 @@
 #ifndef ASM_ARCH_DSP_COMMON_H
 #define ASM_ARCH_DSP_COMMON_H
 
-#ifdef CONFIG_ARCH_OMAP1
+#if defined(CONFIG_ARCH_OMAP1) && defined(CONFIG_OMAP_MMU_FWK)
 extern void omap_dsp_request_mpui(void);
 extern void omap_dsp_release_mpui(void);
 extern int omap_dsp_request_mem(void);
 extern int omap_dsp_release_mem(void);
+#else
+static inline int omap_dsp_request_mem(void)
+{
+	return 0;
+}
+#define omap_dsp_release_mem()	do {} while (0)
 #endif
 
 #endif /* ASM_ARCH_DSP_COMMON_H */