Pull "Qualcomm ARM64 Based defconfig Updates for v4.15" from Andy Gross:
* Enable QCOM IOMMU
* Enable Qualcomm USB options
* tag 'qcom-arm64-defconfig-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
arm64: defconfig: re-enable Qualcomm DB410c USB
arm64: defconfig: Enable QCOM_IOMMU