[PATCH] arch: m32r: include: asm: add generic ioremap_wc() definition

[Chen Gang]

Add generic ioremap_wc() definition, or compiling failed.

The related error (with allmodconfig):

  drivers/gpu/drm/drm_bufs.c: In function ‘drm_addmap_core’:
  drivers/gpu/drm/drm_bufs.c:219:5: error: implicit declaration of function ‘ioremap_wc’ [-Werror=implicit-function-declaration]
  drivers/gpu/drm/drm_bufs.c:219:17: warning: assignment makes pointer from integer without a cast [enabled by default]

Signed-off-by: Chen Gang <gang.chen@xxxxxxxxxxx>
---
 arch/m32r/include/asm/io.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/m32r/include/asm/io.h b/arch/m32r/include/asm/io.h
index 4010f1f..f9f4fb6 100644
--- a/arch/m32r/include/asm/io.h
+++ b/arch/m32r/include/asm/io.h
@@ -67,6 +67,7 @@ static inline void __iomem *ioremap(unsigned long offset, unsigned long size)
 
 extern void iounmap(volatile void __iomem *addr);
 #define ioremap_nocache(off,size) ioremap(off,size)
+#define ioremap_wc ioremap_nocache
 
 /*
  * IO bus memory addresses are also 1:1 with the physical address
-- 
1.7.7.6
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