dfl: add config fragment and readme

configs/n3000_d5005_defconfig

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+CONFIG_FPGA_DFL=m
+CONFIG_FPGA_DFL_FME=m
+CONFIG_FPGA_DFL_FME_MGR=m
+CONFIG_FPGA_DFL_FME_BRIDGE=m
+CONFIG_FPGA_DFL_FME_REGION=m
+CONFIG_FPGA_DFL_AFU=m
+CONFIG_FPGA_DFL_N3000_NIOS=m
+CONFIG_FPGA_DFL_PCI=m
+
+CONFIG_FPGA_VFIO_MDEV_DFL=m
+
+CONFIG_FPGA=m
+CONFIG_FPGA_BRIDGE=m
+CONFIG_FPGA_REGION=m
+
+CONFIG_SENSORS_INTEL_M10_BMC_HWMON=m
+CONFIG_MFD_INTEL_M10_BMC=m
+CONFIG_MFD_INTEL_M10_BMC_SECURE=m
+
+CONFIG_SPI_ALTERA=m
+
+CONFIG_FPGA_DFL_ETH_GROUP=m
+CONFIG_INTEL_M10_BMC_PKVL=m
+
+CONFIG_REGMAP_MMIO=m
+
+CONFIG_IFPGA_SEC_MGR=m
+
+CONFIG_MEMORY=y
+CONFIG_FPGA_DFL_EMIF=m
+
+CONFIG_IIO_INTERRUPT_TRIGGER=m

configs/readme.txt

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+This directory contains linux kernel configuration fragments related to
+the Device Feature List (DFL) driver collection. By design the DFL driver
+collection is extendable, and it is anticipated that new drivers will be added
+to the collection.
+
+The fragments are intended to be appended to a base kernel configuration.
+For example the following commands would configure the kernel source to
+support the Intel n3000 and d5005 PCIe cards:
+
+	# cd kernel_source_directory
+	# cp /boot/config-`uname -r` .config
+	# cat configs/n3000_d5005_defconfig >> .config
+	# make olddefconfig
+
+n3000_d5005_defconfig
+	Default configuration for Intel n3000 and d5005 PCIe cards.