pc80/keyboard: Ignore interface test failure.

On Asus A8N-E this test fails but if failure is ignored keyboard works.

Change-Id: Ifeeff2f41537b35bc90a679f956fea830b94292c
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4816
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>

src/include/types.h

@@ -41,6 +41,10 @@ enum cb_err {
 	CB_CMOS_OPTION_NOT_FOUND = -102,	/**< Option string not found */
 	CB_CMOS_ACCESS_ERROR = -103,		/**< CMOS access error */
 	CB_CMOS_CHECKSUM_INVALID = -104,	/**< CMOS checksum is invalid */
+
+	/* Keyboard test failures */
+	CB_KBD_CONTROLLER_FAILURE = -200,
+	CB_KBD_INTERFACE_FAILURE = -201
 };
 
 #endif /* __TYPES_H */