post_code: add post code for invalid vendor binary

Add a new post code POST_INVALID_VENDOR_BINARY, used when coreboot fails
to locate or validate a vendor supplied binary.

BUG=b:124401932
BRANCH=sarien
TEST=build coreboot for sarien and arcada platforms

Change-Id: Ib1e359d4e8772c37922b1b779135e58c73bff6b4
Signed-off-by: Keith Short <keithshort@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32772
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

src/include/console/post_codes.h

@@ -332,6 +332,14 @@
  */
 #define POST_INVALID_CBFS			0xe1
 
+/**
+ * \brief Vendor binary error
+ *
+ * Set if firmware failed to find or validate a vendor binary, or the binary
+ * generated a fatal error.
+ */
+#define POST_INVALID_VENDOR_BINARY		0xe2
+
 /**
  * \brief TPM failure
  *