[POWERPC] arch/powerpc/: Spelling fixes

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/sysdev/mmio_nvram.c b/arch/powerpc/sysdev/mmio_nvram.c
index e073e24..7b49633a 100644
--- a/arch/powerpc/sysdev/mmio_nvram.c
+++ b/arch/powerpc/sysdev/mmio_nvram.c
@@ -99,7 +99,7 @@
 	nvram_addr = r.start;
 	mmio_nvram_len = r.end - r.start + 1;
 	if ( (!mmio_nvram_len) || (!nvram_addr) ) {
-		printk(KERN_WARNING "nvram: address or lenght is 0\n");
+		printk(KERN_WARNING "nvram: address or length is 0\n");
 		ret = -EIO;
 		goto out;
 	}