nios2: add definition of ioremap_wc to io.h
Fix drivers/gpu/drm/drm_bufs.c: In function 'drm_addmap_core': drivers/gpu/drm/drm_bufs.c:213:5: error: implicit declaration of function 'ioremap_wc' seen when building nios2:allmodconfig. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Ley Foon Tan <lftan@altera.com>
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@ -45,6 +45,8 @@ static inline void iounmap(void __iomem *addr)
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__iounmap(addr);
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}
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#define ioremap_wc ioremap_nocache
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/* Pages to physical address... */
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#define page_to_phys(page) virt_to_phys(page_to_virt(page))
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#define page_to_bus(page) page_to_virt(page)
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