usb_updater2: pretty print touchpad_info
usb_updater2: pretty print touchpad_info

e.g. on whiskers, the command will behave like:

  > usb_updater2 -d 18d1:5030 --tp_info
  < ...
  < status:         0x00
  < vendor:         0x0483
  < fw_address:     0x80000000
  < fw_size:        0x00020000
  < allowed_fw_hash:
  < 20 0f eb 01 98 34 cf 86 8b 4e 94 1f 51 41 e7 64
  < e1 0c 4f ac 88 bd 97 1c 79 ae c5 74 e3 0b 14 6d
  < id:             0x3936
  < fw_version:     0x0011
  < fw_fw_checksum: 0xb49f

BRANCH=none
BUG=b:70482333
TEST=manually on device
Signed-off-by: Wei-Han Chen <5413a119f383c3f4549c3ef659403f393bf06e9d@chromium.org>

Change-Id: Iffe6720eec33cc57498cdab15ac2e132fdd76808
Reviewed-on: https://chromium-review.googlesource.com/1175506
Commit-Ready: Wei-Han Chen <5413a119f383c3f4549c3ef659403f393bf06e9d@chromium.org>
Tested-by: Wei-Han Chen <5413a119f383c3f4549c3ef659403f393bf06e9d@chromium.org>
Reviewed-by: Nicolas Boichat <f3daba1cdc403799935674d3cd4b0e5bd1804232@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec