driver: Rename 'drivers' -> 'driver'

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
power: Migrate 'power' src to kconfig build system

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
includes: Migrate includes to kconfig build system

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
common: Migrate common src to kconfig build system

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
core: Migrate core isa support to src/core

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
chip,core: Migrate into kconfig build system

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
build: Rename Makefile.inc to build.mk

Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>