sh: replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/mm/ioremap_32.c

@@ -141,7 +141,7 @@ void __iounmap(void __iomem *addr)
 
 	p = remove_vm_area((void *)(vaddr & PAGE_MASK));
 	if (!p) {
-		printk(KERN_ERR "%s: bad address %p\n", __FUNCTION__, addr);
+		printk(KERN_ERR "%s: bad address %p\n", __func__, addr);
 		return;
 	}