volteer: Reduce flash usage
This saves 120 bytes.
BRANCH=none
TEST=buildall passes
#define CONFIG_SYSTEM_UNLOCKED /* Allow dangerous commands while in dev. */
/* Remove PRL state names to free flash space */
-#define CONFIG_USB_PD_DEBUG_LEVEL 2
+#define CONFIG_USB_PD_DEBUG_LEVEL 1
#define CONFIG_VBOOT_EFS2
