[pc-suite] Add a define for the pc-suite

Stop re-using ovi-suite mode in qmsystem2, so define pc-suite mode.
At the same time improve mode documentation a bit.

Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>

src/usb_moded-modes.h

@@ -18,27 +18,29 @@
   02110-1301 USA
 */
 
-/* possible values for the mode, however only the first three can be set through the method call
-   the others being internal only.
+/* possible values for the mode
+   the first two are internal only.
  */
 
-#define MODE_MASS_STORAGE       "mass_storage"
-#define MODE_CHARGING           "charging_only"
-#define MODE_CHARGING_FALLBACK  "charging_only_fallback"
 #define MODE_UNDEFINED		"undefined"
 #define MODE_ASK		"ask"
+#define MODE_MASS_STORAGE       "mass_storage"
 #define MODE_DEVELOPER		"developer_mode"
 #define MODE_MTP		"mtp_mode"
-#define MODE_CHARGER		"dedicated_charger"
 #define MODE_HOST		"host_mode"
 #define MODE_CONNECTION_SHARING "connection_sharing"
 #define MODE_DIAG		"qa_diag_mode"
 #define MODE_ADB		"adb_mode"
+#define MODE_PC_SUITE		"pc_suite"
+#define MODE_CHARGING           "charging_only"
 
 /**
  *
  * MODE_CHARGING : user manually selected charging mode
  * MODE_CHARGING_FALLBACK : mode selection is not done by the user so we fallback to a charging mode to get some power
  * MODE_CHARGER : there is a dedicated charger connected to the USB port
  *
+ * the two last ones cannot be set and are not full modes
  **/
+#define MODE_CHARGING_FALLBACK  "charging_only_fallback"
+#define MODE_CHARGER		"dedicated_charger"