Fix misspelling of "should" and "shouldn't" in comments.

Some comments misspell "should" or "shouldn't"; this fixes them. No code changes.

Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index f537555..a4e3775 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -581,7 +581,7 @@
 	struct sdio_uart_port *port =
 			container_of(tport, struct sdio_uart_port, port);
 	unsigned int ret = sdio_uart_claim_func(port);
-	if (ret)	/* Missing hardware shoudn't block for carrier */
+	if (ret)	/* Missing hardware shouldn't block for carrier */
 		return 1;
 	ret = sdio_uart_get_mctrl(port);
 	sdio_uart_release_func(port);