HAL_ChibiOS: add CubePurple/PH2Slim board config

libraries/AP_HAL_ChibiOS/hwdef/CubePurple/defaults.parm

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+# setup correct defaults for battery monitoring for cube power brick
+BATT2_CURR_PIN 14
+BATT2_VOLT_PIN 13
+BATT_AMP_PERVLT 39.877
+BATT_VOLT_MULT 12.02
+BATT2_AMP_PERVLT 39.877
+BATT2_VOLT_MULT 12.02
+BRD_TYPE 6

libraries/AP_HAL_ChibiOS/hwdef/CubePurple/hwdef-bl.dat

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+# hw definition file for processing by chibios_hwdef.py
+# for The CUBE Black and the Cube Purple hardware
+# this is based on fmuv3, but with vendor specific USB IDs
+
+include ../fmuv3/hwdef-bl.dat
+
+# USB setup
+USB_VENDOR 0x2DAE # ONLY FOR USE BY HEX! NOBODY ELSE
+USB_PRODUCT 0x1005
+USB_STRING_MANUFACTURER "Hex/ProfiCNC"
+USB_STRING_PRODUCT "CubePurple-BL"
+USB_STRING_SERIAL  "%SERIAL%"
+
+PA0 GPS_PIN1 OUTPUT LOW PULLDOWN
+PA1 GPS_PIN2 OUTPUT LOW PULLDOWN
+PB8 GPS_PIN3 OUTPUT LOW PULLDOWN
+PB9 GPS_PIN4 OUTPUT LOW PULLDOWN
+PB5 GPS_PIN5 OUTPUT LOW PULLDOWN

libraries/AP_HAL_ChibiOS/hwdef/CubePurple/hwdef.dat

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+# hw definition file for processing by chibios_hwdef.py
+# for The CUBE Black and the Cube Purple hardware
+# this is based on fmuv3, but with vendor specific USB IDs
+
+include ../fmuv3/hwdef.dat
+
+# USB setup
+USB_VENDOR 0x2DAE # ONLY FOR USE BY HEX! NOBODY ELSE
+USB_PRODUCT 0x1015
+USB_STRING_MANUFACTURER "Hex/ProfiCNC"
+USB_STRING_PRODUCT "CubePurple"
+USB_STRING_SERIAL  "%SERIAL%"
+
+# remap PB0/1 as ADC's
+undef PB0
+undef PB1
+PB0 PB0_ADC ADC1 SCALE(1)
+PB1 PB1_ADC ADC1 SCALE(1)