pbio/drv/usb_nxt: Move driver from NxOS.

We have adapted the NxOS USB driver for Pybricks, so now we can move it
to the common pbio/drv/usb directory.

While moving, the code style is automatically formatted and pbio naming
conventions are applied.

Author: dlech

bricks/_common/arm_none_eabi.mk

@@ -515,7 +515,6 @@ NXOS_SRC_C = $(addprefix lib/pbio/platform/nxt/nxos/,\
 	drivers/radar.c \
 	drivers/rs485.c \
 	drivers/sensors.c \
-	drivers/usb.c \
 	interrupts.c \
 	lock.c \
 	util.c \

bricks/_common/sources.mk

@@ -187,6 +187,7 @@ PBIO_SRC_C = $(addprefix lib/pbio/,\
 	drv/uart/uart_stm32f4_ll_irq.c \
 	drv/uart/uart_stm32l4_ll_dma.c \
 	drv/usb/usb_ev3.c \
+	drv/usb/usb_nxt.c \
 	drv/usb/usb_stm32.c \
 	drv/watchdog/watchdog_ev3.c \
 	drv/watchdog/watchdog_stm32.c \

lib/pbio/drv/reset/reset_nxt.c

@@ -10,11 +10,12 @@
 #include <at91sam7s256.h>
 #include <nxos/drivers/_avr.h>
 #include <nxos/drivers/_lcd.h>
-#include <nxos/drivers/_usb.h>
 #include <nxos/drivers/bt.h>
 
 #include <pbdrv/reset.h>
 
+#include "../usb/usb_nxt.h"
+
 void pbdrv_reset_init(void) {
 }
 
@@ -70,7 +71,7 @@ void pbdrv_reset_power_off(void) {
     }
 
     nx__lcd_shutdown();
-    nx__usb_disable();
+    pbdrv_usb_nxt_deinit();
     nx__avr_power_down();
 }