parisc: Define ioremap_uc and ioremap_wc

Commit 3cc2dac5be3f ("drivers/video/fbdev/atyfb: Replace MTRR UC hole
with strong UC") introduces calls to ioremap_wc and ioremap_uc. This
causes build failures with parisc:allmodconfig. Map the missing
functions to ioremap_nocache.

Fixes: 3cc2dac5be3f ("drivers/video/fbdev/atyfb:
Replace MTRR UC hole with strong UC")
Cc: Luis R. Rodriguez <[e-mail]>
Cc: Paul Gortmaker <[e-mail]>
Signed-off-by: Guenter Roeck <[e-mail]>
Signed-off-by: Helge Deller <[e-mail]>

arch/parisc/include/asm/io.h

···
 	return __ioremap(offset, size, _PAGE_NO_CACHE);
 }
 #define ioremap_nocache(off, sz)	ioremap((off), (sz))
+#define ioremap_wc			ioremap_nocache
+#define ioremap_uc			ioremap_nocache
 
 extern void iounmap(const volatile void __iomem *addr);