package/libftdi1: new package

This version of libftdi can coexists beside the 0.x version.

Signed-off-by: Daniel Sangue <daniel.sangue@sangue.ch>
[Samuel Martin:
  - libftdi1.mk: bump to version 1.2 and add hash
  - cleanup uneeded libusb-compat stuff
  - Config.in: add comment when ftdipp1 deps are not met
  - fix typos in variable names and legit CMake options for *_CONF_OPTS
  - add support for python bindings and ftdi_eeprom
  - fix static build
  - fix build with toolchain w/o C++ support
]
Signed-off-by: Samuel Martin <s.martin49@gmail.com>

[Thomas:
 - reorder Config.in option properties: first the "bool" property,
   then the "selects", then the "depends on".
 - remove "thread" dependency from the libftdipp1 comment since the
   whole package can anyway not be selected if there's no thread
   support.
 - fix a big mistake in the .mk file:
    $(if BR2_PACKAGE_PYTHON,python,python3)
   replaced by:
    $(if $(BR2_PACKAGE_PYTHON),python,python3)
 - add license information.]

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>