[MIPS] IP27, IP35: Fix warnings.

include/asm-mips/mach-ip27/dma-coherence.h:22: warning: 'plat_map_dma_mem' defined but not used
include/asm-mips/mach-ip27/dma-coherence.h:41: warning: 'plat_unmap_dma_mem' defined but not used
include/asm-mips/mach-ip32/dma-coherence.h:30: warning: 'plat_map_dma_mem' defined but not used
include/asm-mips/mach-ip32/dma-coherence.h:63: warning: 'plat_unmap_dma_mem' defined but not used

These functions are meant to be inlined anyway.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/mach-ip32/dma-coherence.h b/include/asm-mips/mach-ip32/dma-coherence.h
index 950be17..c3f9a6a 100644
--- a/include/asm-mips/mach-ip32/dma-coherence.h
+++ b/include/asm-mips/mach-ip32/dma-coherence.h
@@ -26,7 +26,8 @@
 
 #define RAM_OFFSET_MASK 0x3fffffffUL
 
-static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
+static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
+	size_t size)
 {
 	dma_addr_t pa = virt_to_phys(addr) & RAM_OFFSET_MASK;
 
@@ -59,7 +60,7 @@
 	return addr;
 }
 
-static void plat_unmap_dma_mem(dma_addr_t dma_addr)
+static inline void plat_unmap_dma_mem(dma_addr_t dma_addr)
 {
 }