system/fastboot: add support for fastboot tcp

Add TCP network transport support for fastboot, users can
add "-s tcp:HOST[:PORT]" option to specify a network device.

Examples

  fastboot -s tcp:192.168.100.2 getvar version
  fastboot -s tcp:192.168.100.2 flash virtblk0 fastboot.c
  fastboot -s tcp:192.168.100.2 oem shell "uname -a"

Signed-off-by: wangjianyu3 <[email protected]>

Author: JianyuWang0623

system/fastboot/Kconfig

@@ -6,7 +6,7 @@
 menuconfig SYSTEM_FASTBOOTD
 	bool "fastbootd"
 	default n
-	depends on USBFASTBOOT
+	depends on USBFASTBOOT || NET_TCP
 	---help---
 		support usb fastboot function.
 
@@ -29,6 +29,7 @@ config SYSTEM_FASTBOOTD_USB_BOARDCTL
 	default n
 	depends on BOARDCTL
 	depends on BOARDCTL_USBDEVCTRL
+	depends on USBFASTBOOT
 	---help---
 		Connect usbdev before running fastboot daemon.