Documentation: Add doxygen_platform target

Create a doxygen target that builds documentation just for the platform
that is currently selected in Kconfig.  This gives us something that is
much more useful to most people.

Change-Id: I25c3cdac2dd383b89df6389ba9011dac913a0a9b
Signed-off-by: Martin Roth <>
Reviewed-by: Philipp Deppenwiese <>
Reviewed-by: Paul Menzel <>
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <>
2 files changed