mxsldr: new package

mxsldr: new package

Signed-off-by: Erik Stromdahl <erik.stromdahl@gmail.com>
[Thomas:
 - Rename prompt from "host-mxsldr" to "host mxsldr".
 - Add BR2_armeb in the list of architectures under which this package
   can be enabled.
 - Remove double quotes around the _SITE value.
 - The license is GPLv2+, not GPLv2.
 - Add a value for the _LICENSE_FILES variable
 - Rename MXSLDR_DEPENDENCIES to HOST_MXSLDR_DEPENDENCIES, since the
   dependencies of the host package are no longer derived from the
   dependencies of the target package.
 - Remove the MXSLDR_MAKE_OPTS variable that contained the PKG_CONFIG
   variable definition: it is already passed in HOST_CONFIGURE_OPTS.
 - Remove hash file, as it is not checked on Git packages for now.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>