soc/amd/picasso: Fix comment about SMU firmware2 type

SMU firmware2 has type 0x12 i.e. decimal 18 and not 0x18. This change
updates the comment for SMU firmware2 type.

Change-Id: Ia2e35aff3e460a3423f90d6ecdbe2362331391f3
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40698
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>
diff --git a/src/soc/amd/picasso/Makefile.inc b/src/soc/amd/picasso/Makefile.inc
index 6fd1524..224202f 100644
--- a/src/soc/amd/picasso/Makefile.inc
+++ b/src/soc/amd/picasso/Makefile.inc
@@ -103,7 +103,7 @@
 PSPBTLDR_FILE=$(top)/$(FIRMWARE_LOCATE)/PspBootLoader_prod_RV.sbin
 endif
 
-# types = 0x8 and 0x18
+# types = 0x8 and 0x12
 PSP_SMUFW1_SUB1_FILE=$(top)/$(FIRMWARE_LOCATE)/SmuFirmwareRV2.csbin
 PSP_SMUFW1_SUB2_FILE=$(top)/$(FIRMWARE_LOCATE)/SmuFirmwarePCO.csbin
 PSP_SMUFW2_SUB1_FILE=$(top)/$(FIRMWARE_LOCATE)/SmuFirmware2RV2.csbin