Correct some common spelling mistakes

- occured -> occurred
- accomodate -> accommodate
- existant -> existent
- asssertion -> assertion
- manangement -> management
- cotroller -> controller

Change-Id: Ibd6663752466d691fabbdc216ea05f2b58ac12d1
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12850
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/southbridge/amd/pi/hudson/smihandler.c

@@ -64,7 +64,7 @@ static void process_gpe_smi(void)
 
 	/* Only Bits [23:0] indicate GEVENT SMIs. */
 	if (status & gevent_mask) {
-		/* A GEVENT SMI occured */
+		/* A GEVENT SMI occurred */
 		mainboard_smi_gpi(status & gevent_mask);
 	}