Merge pull request #6209 from thinkyhead/rc_psu_zero

Power Supply 0 as "General"

Marlin/ultralcd.cpp

       STATIC_ITEM(BOARD_NAME, true, true);                           // MyPrinterController
       STATIC_ITEM(MSG_INFO_BAUDRATE ": " STRINGIFY(BAUDRATE), true); // Baud: 250000
       STATIC_ITEM(MSG_INFO_PROTOCOL ": " PROTOCOL_VERSION, true);    // Protocol: 1.0
-      #ifdef POWER_SUPPLY
-        #if (POWER_SUPPLY == 1)
-          STATIC_ITEM(MSG_INFO_PSU ": ATX", true);  // Power Supply: ATX
-        #elif (POWER_SUPPLY == 2)
-          STATIC_ITEM(MSG_INFO_PSU ": XBox", true); // Power Supply: XBox
-        #endif
-      #endif // POWER_SUPPLY
+      #if POWER_SUPPLY == 0
+        STATIC_ITEM(MSG_INFO_PSU ": Generic", true);
+      #elif POWER_SUPPLY == 1
+        STATIC_ITEM(MSG_INFO_PSU ": ATX", true);  // Power Supply: ATX
+      #elif POWER_SUPPLY == 2
+        STATIC_ITEM(MSG_INFO_PSU ": XBox", true); // Power Supply: XBox
+      #endif
       END_SCREEN();
     }