[ARM] Add extra IO functionality.

Add {read,write}[bwl] functionality to Acorn RISC PC.  Add
{read,write}s[bwl] functionality for all.

include/asm-arm/arch-rpc/io.h

@@ -247,4 +247,9 @@ DECLARE_IO(int,l,"")
 #define outsb(p,d,l)	__raw_writesb(__ioaddr(p),d,l)
 #define outsw(p,d,l)	__raw_writesw(__ioaddr(p),d,l)
 
+/*
+ * 1:1 mapping for ioremapped regions.
+ */
+#define __mem_pci(x)	(x)
+
 #endif

include/asm-arm/io.h

@@ -150,10 +150,18 @@ extern void _memset_io(unsigned long, int, size_t);
 #define readw(c) ({ unsigned int __v = le16_to_cpu(__raw_readw(__mem_pci(c))); __v; })
 #define readl(c) ({ unsigned int __v = le32_to_cpu(__raw_readl(__mem_pci(c))); __v; })
 
+#define readsb(p,d,l)		__raw_readsb((unsigned int)__mem_pci(p),d,l)
+#define readsw(p,d,l)		__raw_readsw((unsigned int)__mem_pci(p),d,l)
+#define readsl(p,d,l)		__raw_readsl((unsigned int)__mem_pci(p),d,l)
+
 #define writeb(v,c)		__raw_writeb(v,__mem_pci(c))
 #define writew(v,c)		__raw_writew(cpu_to_le16(v),__mem_pci(c))
 #define writel(v,c)		__raw_writel(cpu_to_le32(v),__mem_pci(c))
 
+#define writesb(p,d,l)		__raw_writesb((unsigned int)__mem_pci(p),d,l)
+#define writesw(p,d,l)		__raw_writesw((unsigned int)__mem_pci(p),d,l)
+#define writesl(p,d,l)		__raw_writesl((unsigned int)__mem_pci(p),d,l)
+
 #define memset_io(c,v,l)	_memset_io(__mem_pci(c),(v),(l))
 #define memcpy_fromio(a,c,l)	_memcpy_fromio((a),__mem_pci(c),(l))
 #define memcpy_toio(c,a,l)	_memcpy_toio(__mem_pci(c),(a),(l))