USB: serial: cp210x: add Phoenix Contact UPS Device

Phoenix Contact sells UPS Quint devices [1] with a custom datacable [2]
that embeds a Silicon Labs converter:

Bus 001 Device 003: ID 1b93:1013 Silicon Labs Phoenix Contact UPS Device
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x1b93
  idProduct          0x1013
  bcdDevice            1.00
  iManufacturer           1 Silicon Labs
  iProduct                2 Phoenix Contact UPS Device
  iSerial                 3 <redacted>
  bNumConfigurations	 1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0020
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              2 Phoenix Contact UPS Device
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0

[1] https://www.phoenixcontact.com/en-pc/products/power-supply-unit-quint-ps-1ac-24dc-10-2866763
[2] https://www.phoenixcontact.com/en-il/products/data-cable-preassembled-ifs-usb-datacable-2320500



Reported-by: Giuseppe Corbelli <giuseppe.corbelli@antaresvision.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>