[SERIAL] typo: buad -> baud

Replacing mistyped "buad" with "baud" where applicable.

Signed-off-by: Horst Schirmeier <horst@schirmeier.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/mips/gt64120/ev64120/serialGT.c b/arch/mips/gt64120/ev64120/serialGT.c
index 16e34a5..8f0d835 100644
--- a/arch/mips/gt64120/ev64120/serialGT.c
+++ b/arch/mips/gt64120/ev64120/serialGT.c
@@ -149,7 +149,7 @@
 #else
 	/*
 	 * Note: Set baud rate, hardcoded here for rate of 115200
-	 * since became unsure of above "buad rate" algorithm (??).
+	 * since became unsure of above "baud rate" algorithm (??).
 	 */
 	outreg(channel, LCR, 0x83);
 	outreg(channel, DLM, 0x00);	// See note above