MIPS: io.h: Define `ioremap_cache'

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12040/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/include/asm/io.h

@@ -275,6 +275,7 @@ static inline void __iomem * __ioremap_mode(phys_addr_t offset, unsigned long si
  */
 #define ioremap_cachable(offset, size)					\
 	__ioremap_mode((offset), (size), _page_cachable_default)
+#define ioremap_cache ioremap_cachable
 
 /*
  * These two are MIPS specific ioremap variant.	 ioremap_cacheable_cow