Merge pull request #7621 from smlng/cpu/sam_common

cpu/sam_common/Makefile

cpu/sam_common/Makefile.include

cpu/sam_common/doc.txt

cpu/sam_common/include/cpu_conf.h

cpu/sam_common/include/vendor/README.md

cpu/sam_common/include/vendor/sam.h

...on/include/vendor/sam3x/include/component/component_adc.h

...on/include/vendor/sam3x/include/component/component_can.h

...include/vendor/sam3x/include/component/component_chipid.h

...n/include/vendor/sam3x/include/component/component_dacc.h

...n/include/vendor/sam3x/include/component/component_dmac.h

...on/include/vendor/sam3x/include/component/component_efc.h

...n/include/vendor/sam3x/include/component/component_emac.h

...n/include/vendor/sam3x/include/component/component_gpbr.h

.../include/vendor/sam3x/include/component/component_hsmci.h

...include/vendor/sam3x/include/component/component_matrix.h

...on/include/vendor/sam3x/include/component/component_pdc.h

...on/include/vendor/sam3x/include/component/component_pio.h

...on/include/vendor/sam3x/include/component/component_pmc.h

...on/include/vendor/sam3x/include/component/component_pwm.h