scripts/spelling.txt: add "memory" pattern and fix typos

Fix typos and add the following to the scripts/spelling.txt:

      momery||memory

Link: http://lkml.kernel.org/r/20170317011131.6881-1-sboyd@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/leds/leds-lp5562.c b/drivers/leds/leds-lp5562.c
index b753338..9089258 100644
--- a/drivers/leds/leds-lp5562.c
+++ b/drivers/leds/leds-lp5562.c
@@ -270,7 +270,7 @@ static void lp5562_firmware_loaded(struct lp55xx_chip *chip)
 	}
 
 	/*
-	 * Program momery sequence
+	 * Program memory sequence
 	 *  1) set engine mode to "LOAD"
 	 *  2) write firmware data into program memory
 	 */