soc/amd/picasso/mca: add missing comma in mca_bank_name array of strings

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Found-by: Coverity CID 1451389
Change-Id: I0af379360fc95e4c6b72d677738c6e7497ed9206
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51788
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/soc/amd/picasso/mca.c

@@ -137,7 +137,7 @@ static const char *const mca_bank_name[] = {
 	"Load-store unit",
 	"Instruction fetch unit",
 	"L2 cache unit",
-	"Decode unit"
+	"Decode unit",
 	"",
 	"Execution unit",
 	"Floating point unit",