disk: convert CONFIG_MAC_PARTITION to Kconfig

configs/acadia_defconfig

configs/arches_defconfig

configs/bamboo_defconfig

configs/bayleybay_defconfig

configs/cam5200_defconfig

configs/cam5200_niosflash_defconfig

configs/canyonlands_defconfig

configs/charon_defconfig

configs/chromebook_link_defconfig

configs/chromebook_samus_defconfig

configs/chromebox_panther_defconfig

configs/cm5200_defconfig

configs/conga-qeval20-qa3-e3845-internal-uart_defconfig

configs/conga-qeval20-qa3-e3845_defconfig

configs/coreboot-x86_defconfig

configs/cougarcanyon2_defconfig

configs/crownbay_defconfig

configs/dbau1000_defconfig

configs/dbau1100_defconfig

configs/dbau1500_defconfig