stm32/boards: Add named digital and analog pins for Arduino boardrs.

Adds Dx and Ax named pins for Arduino Gigi, Arduino Nicla Vision and
Arduino Portenta H7.  The analog pins include the dual-pad _C pins.

Signed-off-by: Sebastian Romero <s.romero@arduino.cc>

ports/stm32/boards/ARDUINO_GIGA/pins.csv

@@ -166,6 +166,123 @@ PK4,PK4
 PK5,PK5
 PK6,PK6
 PK7,PK7
+
+# Arduino Digital Pins
+D0,PB7
+D1,PA9
+D2,PA3
+D3,PA2
+D4,PJ8
+D5,PA7
+D6,PD13
+D7,PB4
+D8,PB8
+D9,PB9
+D10,PK1
+D11,PJ10
+D12,PJ11
+D13,PH6
+D14,PG14
+D15,PC7
+D16,PH13
+D17,PI9
+D18,PD5
+D19,PD6
+D20,PB11
+D21,PH4
+D22,PJ12
+D23,PG13
+D24,PG12
+D25,PJ0
+D26,PJ14
+D27,PJ1
+D28,PJ15
+D29,PJ2
+D30,PK3
+D31,PJ3
+D32,PK4
+D33,PJ4
+D34,PK5
+D35,PJ5
+D36,PK6
+D37,PJ6
+D38,PJ7
+D39,PI14
+D40,PE6
+D41,PK7
+D42,PI15
+D43,PI10
+D44,PG10
+D45,PI13
+D46,PH15
+D47,PB2
+D48,PK0
+D49,PE4
+D50,PI11
+D51,PE5
+D52,PK2
+D53,PG7
+D54,PI5
+D55,PH8
+D56,PA6
+D57,PJ9
+D58,PI7
+D59,PI6
+D60,PI4
+D61,PH14
+D62,PG11
+D63,PH11
+D64,PH10
+D65,PH9
+D66,PA1
+D67,PD4
+D68,PC6
+D69,PI0
+D70,PI1
+D71,PI2
+D72,PI3
+D73,PC1
+D74,PB12
+D75,PD3
+D76,PC4
+D77,PC5
+D78,PB0
+D79,PB1
+D80,PC3
+D81,PC2
+D82,PC0
+D83,PA0
+D84,PA4
+D85,PA5
+D86,PI12
+D87,PJ13
+D88,PE3
+D89,PG9
+D90,PD7
+D91,PB3
+D92,PA15
+D93,PB5
+D94,PB13
+D100,PC13
+D101,PB6
+D102,PH12
+
+# Arduino Analog Pins
+A0,PC4
+A1,PC5
+A2,PB0
+A3,PB1
+A4,PC3
+A5,PC2
+A6,PC0
+A7,PA0
+A8,PC2_C
+A9,PC3_C
+A10,PA1_C
+A11,PA0_C
+A12,PA4
+A13,PA5
+
 UART1_TX,PA9
 UART1_RX,PB7
 UART2_TX,PD5
@@ -177,11 +294,12 @@ UART6_RX,PC7
 -USB_DM,PA11
 -USB_DP,PA12
 #BOOT0,BOOT0
-DAC1,PA4
-DAC2,PA5
+DAC0,PA4
+DAC1,PA5
 LEDR,PI12
 LEDG,PJ13
 LEDB,PE3
+LED_BUILTIN,PJ13
 LED_RED,PI12
 LED_GREEN,PJ13
 LED_BLUE,PE3

ports/stm32/boards/ARDUINO_NICLA_VISION/pins.csv

@@ -166,6 +166,30 @@ PK4,PK4
 PK5,PK5
 PK6,PK6
 PK7,PK7
+
+# Arduino Digital Pins
+D0,PG12
+D1,PA9
+D2,PA10
+D3,PG1
+
+# Arduino Analog Pins
+A0,PC4
+A1,PF13
+A2,PF3
+
+SCKL,PE12
+CIPO,PE13
+COPI,PE14
+CS,PE11
+LPIO0,PG12
+LPIO1,PA9
+LPIO2,PA10
+LPIO3,PG1
+SCL,PB8
+SDA,PB9
+UART_RX,PA10
+UART_TX,PA9
 UART1_TX,PA9
 UART1_RX,PA10
 UART4_TX,-PA0

ports/stm32/boards/ARDUINO_PORTENTA_H7/pins.csv

@@ -166,6 +166,36 @@ PK4,PK4
 PK5,PK5
 PK6,PK6
 PK7,PK7
+
+# Arduino Digital Pins
+D0,PH15
+D1,PK1
+D2,PJ11
+D3,PG7
+D4,PC7
+D5,PC6
+D6,PA8
+D7,PI0
+D8,PC3
+D9,PI1
+D10,PC2
+D11,PH8
+D12,PH7
+D13,PA10
+D14,PA9
+D20,PC3
+D21,PA4
+
+# Arduino Analog Pins
+A0,PA0_C
+A1,PA1_C
+A2,PC2_C
+A3,PC3_C
+A4,PC2
+A5,PC3
+A6,PA4
+A7,PA6
+
 UART1_TX,PA9
 UART1_RX,PA10
 UART4_TX,PA0
@@ -209,6 +239,7 @@ LEDB,PK7
 LED_RED,PK5
 LED_GREEN,PK6
 LED_BLUE,PK7
+LED_BUILTIN,PK6
 I2C1_SDA,PB7
 I2C1_SCL,PB6
 I2C3_SDA,PH8