MIPS: Fix typos and cleanup comment

Signed-off-by: Tony Wu <tung7970@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5535/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 4712f3c..357e0fd 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -972,7 +972,7 @@
 	uasm_i_srl(p, ptr, ptr, 19);
 #else
 	/*
-	 * smp_processor_id() << 3 is stored in CONTEXT.
+	 * smp_processor_id() << 2 is stored in CONTEXT.
 	 */
 	uasm_i_mfc0(p, ptr, C0_CONTEXT);
 	UASM_i_LA_mostly(p, tmp, pgdc);