rewrite comments into one, unified style

code/drivers/bus/usb/usb.c

@@ -1,4 +1,5 @@
-// usb.c - USB bus driver entry point and host-controller driver registration.
+// USB driver package entry point. This file registers the USB bus, class, hub, HID, storage, and xHCI drivers.
+
 #include "usb.h"
 
 DRIVER_OBJECT gXhciDriver;
@@ -23,6 +24,7 @@ const char* UsbControllerName(uint8_t progIf) {
     }
 }
 
+// Initializes xhci Driver.
 static KSTATUS UsbInitializeXhciDriver(void) {
     memset(&gXhciDriver, 0, sizeof(gXhciDriver));
     IoInitializeDriverObject(&gXhciDriver, SYS_SV_LITERAL("xhci"));
@@ -32,6 +34,7 @@ static KSTATUS UsbInitializeXhciDriver(void) {
     return IoRegisterDriverObject(&gXhciDriver);
 }
 
+// Implements the driver Entry operation.
 KSTATUS DriverEntry(const HAL_API* hal) {
     if (!hal) return STATUS_INVALID_PARAMETER;
     DbgPrint("usb: driver loading\n");