[POWERPC] Replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/sysdev/cpm1.c b/arch/powerpc/sysdev/cpm1.c
index df8bd2b..3eceeb5 100644
--- a/arch/powerpc/sysdev/cpm1.c
+++ b/arch/powerpc/sysdev/cpm1.c
@@ -257,7 +257,7 @@
 		if ((in_be16(&cpmp->cp_cpcr) & CPM_CR_FLG) == 0)
 			goto out;
 
-	printk(KERN_ERR "%s(): Not able to issue CPM command\n", __FUNCTION__);
+	printk(KERN_ERR "%s(): Not able to issue CPM command\n", __func__);
 	ret = -EIO;
 out:
 	spin_unlock_irqrestore(&cmd_lock, flags);