i2c.hpp: add I2c::writeReg method

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
maa.i: remove invalid typemaps to char* and include carrays

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
hello_isr.py: add license header

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>
maa: change complex C++ write calls to CamelCase for spi & i2c

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>