Merge pull request #9437 from biboc/pr/board/samr30-xpro

boards/samr30-xpro/Makefile

boards/samr30-xpro/Makefile.dep

boards/samr30-xpro/Makefile.features

boards/samr30-xpro/Makefile.include

boards/samr30-xpro/board.c

boards/samr30-xpro/dist/openocd.cfg

boards/samr30-xpro/include/board.h

boards/samr30-xpro/include/gpio_params.h

boards/samr30-xpro/include/periph_conf.h

cpu/sam0_common/Makefile.include

cpu/sam0_common/include/periph_cpu_common.h

cpu/sam0_common/include/vendor/sam0.h

cpu/sam0_common/include/vendor/samr30/README.md

cpu/sam0_common/include/vendor/samr30/include/component/ac.h

...sam0_common/include/vendor/samr30/include/component/adc.h

...sam0_common/include/vendor/samr30/include/component/ccl.h

...am0_common/include/vendor/samr30/include/component/dmac.h

...sam0_common/include/vendor/samr30/include/component/dsu.h

...sam0_common/include/vendor/samr30/include/component/eic.h

...m0_common/include/vendor/samr30/include/component/evsys.h