generic-poky/meta/conf/machine/include/soc-family.inc

# Add SOC_FAMILY to machine overrides so we get access to e.g. 'omap3' and 'ti335x'
SOC_FAMILY ??= ""
MACHINEOVERRIDES =. "${@['', '${SOC_FAMILY}:']['${SOC_FAMILY}' != '']}"
	`# Add SOC_FAMILY to machine overrides so we get access to e.g. 'omap3' and 'ti335x'`
	`SOC_FAMILY ??= ""`
	`MACHINEOVERRIDES =. "${@['', '${SOC_FAMILY}:']['${SOC_FAMILY}' != '']}"`