Propagating change of the return value of platform_getChannelSelector

platform/targets/DM-1801/platform.c

@@ -139,7 +139,7 @@ float platform_getVolumeLevel()
     return 0.0f;
 }
 
-uint8_t platform_getChSelector()
+int8_t platform_getChSelector()
 {
     /* GD77 does not have a channel selector */
     return 0;

platform/targets/GD-77/platform.c

@@ -138,7 +138,7 @@ float platform_getVolumeLevel()
     return 0.0f;
 }
 
-uint8_t platform_getChSelector()
+int8_t platform_getChSelector()
 {
     /* GD77 does not have a channel selector */
     return 0;

platform/targets/MD-3x0/platform.c

@@ -131,7 +131,7 @@ float platform_getVolumeLevel()
     return adc1_getMeasurement(3);
 }
 
-uint8_t platform_getChSelector()
+int8_t platform_getChSelector()
 {
     static const uint8_t rsPositions[] = { 11, 14, 10, 15, 6, 3, 7, 2, 12, 13,
                                            9, 16, 5, 4, 8, 1 };

platform/targets/linux/platform.c

@@ -62,7 +62,7 @@ float platform_getVolumeLevel()
 }
 
 
-uint8_t platform_getChSelector()
+int8_t platform_getChSelector()
 {
     return Radio_State.chSelector;
 }