autoconf: lowered version requirement.
i2c-core: added a vector reshape.
Signed-off-by: Michel Megens <dev@michelmegens.net>
vector: added include/lib/vector.h
i2c-msg: standardized the vector data symbol.
i2c-core: rewrote the transfer control in __i2c_start_xfer.
Signed-off-by: Michel Megens <dev@michelmegens.net>