csky: remove ioremap_cache

No driver that can be used on csky uses ioremap_cache, and this
interface has been deprecated in favor of memremap.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Guo Ren <guoren@kernel.org>

arch/csky/include/asm/io.h

@@ -36,13 +36,11 @@
 /*
  * I/O memory mapping functions.
  */
-extern void __iomem *ioremap_cache(phys_addr_t addr, size_t size);
 extern void __iomem *__ioremap(phys_addr_t addr, size_t size, pgprot_t prot);
 extern void iounmap(void *addr);
 
 #define ioremap(addr, size)		__ioremap((addr), (size), pgprot_noncached(PAGE_KERNEL))
 #define ioremap_wc(addr, size)		__ioremap((addr), (size), pgprot_writecombine(PAGE_KERNEL))
-#define ioremap_cache			ioremap_cache
 
 #include <asm-generic/io.h>
 

arch/csky/mm/ioremap.c

@@ -44,13 +44,6 @@ void __iomem *__ioremap(phys_addr_t phys_addr, size_t size, pgprot_t prot)
 }
 EXPORT_SYMBOL(__ioremap);
 
-void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size)
-{
-	return __ioremap_caller(phys_addr, size, PAGE_KERNEL,
-				__builtin_return_address(0));
-}
-EXPORT_SYMBOL(ioremap_cache);
-
 void iounmap(void __iomem *addr)
 {
 	vunmap((void *)((unsigned long)addr & PAGE_MASK));