ef0d2ba201
Define new source files "function.h" and "function.c" to contain the definitions of the Greybus function abstraction. A Greybus function represents an active entity connected to a CPort implemented by a Greybus interface. A Greybus function has a type, which defines the protocol to be used to interact with the function. A Greybus interface normally has at least two functions, but potentially many more. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>