src/mainboard to src/security: Fix spelling errors

These issues were found and fixed by codespell, a useful tool for
finding spelling errors.

Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: Ie34003a9fdfe9f3b1b8ec0789aeca8b9435c9c79
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58081
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/mainboard/portwell/m107/spd/SAMSUNG_K4B8G1646D-MYKO.spd.hex b/src/mainboard/portwell/m107/spd/SAMSUNG_K4B8G1646D-MYKO.spd.hex
index c3b71d6..2a03e04 100644
--- a/src/mainboard/portwell/m107/spd/SAMSUNG_K4B8G1646D-MYKO.spd.hex
+++ b/src/mainboard/portwell/m107/spd/SAMSUNG_K4B8G1646D-MYKO.spd.hex
@@ -38,7 +38,7 @@
 #	4 SDRAM CHIP Density and Banks
 #		bits[3:0]: 4 = 4 Gigabits Total SDRAM capacity per chip
 #		bits[6:4]: 0 = 3 (8 banks)
-#		bits[7]: reserverd
+#		bits[7]: reserved
 04
 
 #	5 SDRAM Addressing