Staging: remove heci driver

Intel has officially abandoned this project and does not want to
maintian it or have it included in the main kernel tree, as no one
should use the code, it's not needed anymore.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/staging/Kconfig
Simple merge

diff --cc drivers/staging/Makefile
Simple merge

diff --cc drivers/staging/heci/Kconfig
Simple merge

diff --cc drivers/staging/heci/Makefile
Simple merge

diff --cc drivers/staging/heci/TODO
Simple merge

diff --cc drivers/staging/heci/heci.h
Simple merge

diff --cc drivers/staging/heci/heci_data_structures.h
Simple merge

diff --cc drivers/staging/heci/heci_init.c
Simple merge

diff --cc drivers/staging/heci/heci_interface.c
Simple merge

diff --cc drivers/staging/heci/heci_interface.h
Simple merge

diff --cc drivers/staging/heci/heci_main.c
Simple merge

diff --cc drivers/staging/heci/heci_version.h
Simple merge

diff --cc drivers/staging/heci/interrupt.c
Simple merge

diff --cc drivers/staging/heci/io_heci.c
Simple merge