cpu: efm32: update vendor headers

cpu/efm32/families/efm32gg/include/vendor/efm32gg990f1024.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_acmp.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_adc.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_aes.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_af_pins.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_af_ports.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_burtc.h

...efm32/families/efm32gg/include/vendor/efm32gg_burtc_ret.h

...efm32/families/efm32gg/include/vendor/efm32gg_calibrate.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_cmu.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_dac.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_devinfo.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_dma.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_dma_ch.h

.../families/efm32gg/include/vendor/efm32gg_dma_descriptor.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_dmactrl.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_dmareq.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_ebi.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_emu.h

cpu/efm32/families/efm32gg/include/vendor/efm32gg_etm.h