$ cat meta-iot2000/meta-iot2000-bsp/recipes-kernel/linux/linux-yocto-rt_4.4.bbappend
require linux-yocto.inc

$ cat meta-iot2000/meta-iot2000-bsp/recipes-kernel/linux/linux-yocto.inc
FILESEXTRAPATHS_prepend := "${THISDIR}/files:"

SRC_URI += " \
    file://0001-stmmac-adding-support-for-platform-IOT2000.patch \
    file://0002-serial-uapi-Add-support-for-bus-termination.patch \
    file://0003-serial-8250_pci-Use-symbolic-constants-for-EXAR-s-MP.patch \
    file://0004-serial-8250_pci-Fix-EXAR-feature-control-register-co.patch \
    file://0005-serial-8250_pci-Add-support-for-IOT2000-platform.patch \
    file://0006-efi-add-capsule-update-module.patch \
    file://iot2000.cfg"

LINUX_VERSION_iot2000 = "${LINUX_VERSION_INTEL_COMMON}"
COMPATIBLE_MACHINE_iot2000 = "iot2000"
KMACHINE_iot2000 = "intel-quark"
KBRANCH_iot2000 = "${KBRANCH_INTEL_COMMON}"
SRCREV_meta_iot2000 ?= "${SRCREV_META_INTEL_COMMON}"
SRCREV_machine_iot2000 ?= "${SRCREV_MACHINE_INTEL_COMMON}"
KERNEL_FEATURES_append_iot2000 = ""

$ cat meta-iot2000/meta-iot2000-bsp/recipes-kernel/linux/files/iot2000.cfg
CONFIG_I2C_DESIGNWARE_PLATFORM=y

CONFIG_SPI_PXA2XX=y
CONFIG_SPI_PXA2XX_PCI=y
# CONFIG_SPI_TOPCLIFF_PCH is not set

CONFIG_MFD_PCA9685=y

CONFIG_GPIO_SYSFS=y
CONFIG_GPIO_DWAPB=y
CONFIG_GPIO_SCH=y
CONFIG_GPIO_PCA953X=y
CONFIG_GPIO_PCA953X_IRQ=y
# CONFIG_GPIO_PCH is not set

CONFIG_LPC_SCH=y

CONFIG_ADC1x8S102=m

# CONFIG_IOMMU_SUPPORT is not set

CONFIG_PWM=y
CONFIG_PWM_PCA9685=y

CONFIG_USB_OHCI_HCD=y

CONFIG_USB_CONFIGFS=y
CONFIG_USB_CONFIGFS_ACM=y

CONFIG_EFI_VARS=y

CONFIG_IE6XX_WDT=y

CONFIG_EFI_CAPSULE=y