usb-c: ignore VDM messaged when using PD 2.0

according to PD 2.0 sepecification VDM should be ignored
if not supported.

Signed-off-by: Johan Carlsson <johan.carlsson@teenage.engineering>

Author: Johan Carlsson

subsys/usb/usb_c/usbc_pe_snk_states.c

@@ -432,6 +432,15 @@ void pe_snk_ready_run(void *obj)
 			case PD_DATA_SOURCE_CAP:
 				pe_set_state(dev, PE_SNK_EVALUATE_CAPABILITY);
 				break;
+			case PD_DATA_VENDOR_DEF:
+				/**
+				 * VDM is unsupported. PD2.0 ignores and PD3.0
+				 * reply with not supported.
+				 */
+				if (prl_get_rev(dev, PD_PACKET_SOP) > PD_REV20) {
+					pe_set_state(dev, PE_SEND_NOT_SUPPORTED);
+				}
+				break;
 			default:
 				pe_set_state(dev, PE_SEND_NOT_SUPPORTED);
 			}

subsys/usb/usb_c/usbc_pe_src_states.c

@@ -408,6 +408,15 @@ void pe_src_ready_run(void *obj)
 			case PD_DATA_REQUEST:
 				pe_set_state(dev, PE_SRC_NEGOTIATE_CAPABILITY);
 				break;
+			case PD_DATA_VENDOR_DEF:
+				/**
+				 * VDM is unsupported. PD2.0 ignores and PD3.0
+				 * reply with not supported.
+				 */
+				if (prl_get_rev(dev, PD_PACKET_SOP) > PD_REV20) {
+					pe_set_state(dev, PE_SEND_NOT_SUPPORTED);
+				}
+				break;
 			default:
 				pe_set_state(dev, PE_SEND_NOT_SUPPORTED);
 			}