sh: move the ARCH_DMA_MINALIGN definition to asm/cache.h

The sh architecture defines ARCH_DMA_MINALIGN in asm/page.h.  Move it to
asm/cache.h to allow a generic ARCH_DMA_MINALIGN definition in
linux/cache.h without redefine errors/warnings.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Catalin Marinas <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: John Paul Adrian Glaubitz <[email protected]>
Cc: Christophe Leroy <[email protected]>
Cc: kernel test robot <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Nicholas Piggin <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: ctmarinas

arch/sh/include/asm/cache.h

@@ -14,6 +14,12 @@
 
 #define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
 
+/*
+ * Some drivers need to perform DMA into kmalloc'ed buffers
+ * and so we have to increase the kmalloc minalign for this.
+ */
+#define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
+
 #define __read_mostly __section(".data..read_mostly")
 
 #ifndef __ASSEMBLY__

arch/sh/include/asm/page.h

@@ -174,10 +174,4 @@ typedef struct page *pgtable_t;
 #include <asm-generic/memory_model.h>
 #include <asm-generic/getorder.h>
 
-/*
- * Some drivers need to perform DMA into kmalloc'ed buffers
- * and so we have to increase the kmalloc minalign for this.
- */
-#define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
-
 #endif /* __ASM_SH_PAGE_H */