Resolve a false positive on ERC by adding a power flag to a supply input.

hardware/rfsw-mchip.sch

@@ -848,4 +848,15 @@ Wire Notes Line
 	3725 2750 3725 2675
 Text Notes 4350 2400 0    50   ~ 10
 RF-SP3T
+$Comp
+L power:PWR_FLAG #FLG?
+U 1 1 5FC03C85
+P 5100 2050
+F 0 "#FLG?" H 5100 2125 50  0001 C CNN
+F 1 "PWR_FLAG" H 5100 2223 50  0000 C CNN
+F 2 "" H 5100 2050 50  0001 C CNN
+F 3 "~" H 5100 2050 50  0001 C CNN
+	1    5100 2050
+	1    0    0    -1  
+$EndComp
 $EndSCHEMATC