mips: Fix printk typos in arc/mips

Correct spelling "platfom" to "platform", "deactived" to "deactivated"
and "deprectated" to "deprecated" in arch/mips directory.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/arch/mips/sni/pcimt.c b/arch/mips/sni/pcimt.c
index ed3b3d317..cdb1417 100644
--- a/arch/mips/sni/pcimt.c
+++ b/arch/mips/sni/pcimt.c
@@ -29,7 +29,7 @@
 
 	scsiz = cacheconf & 7;
 	if (scsiz == 0) {
-		printk("Second level cache is deactived.\n");
+		printk("Second level cache is deactivated.\n");
 		return;
 	}
 	if (scsiz >= 6) {