usb-linux: increase buffer for USB control requests The WLAN USB stick ZyXEL NWD271N (0586:3417) uses very large usb control transfers of more than 2048 bytes which won't fit into the buffer of the ctrl_struct. This results in an error message "husb: ctrl buffer too small" and a non-working device. Increasing the buffer size to 8192 seems to be a safe choice. Signed-off-by: Christian Krause <chkr@plauener.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>