Updates -rt patchset to -rt48.

Updated kernel config as well to include:

intel-x86: enable edac support for Elkhart Lake
intel-x86-64: firmware: fix CONFIG_FW_LOADER option mismatch warning
nxp-imx8: include hugetlb feature
kver: bumping to v5.4.90
ti-j72xx: add CMA and DMA_CMA configs
drm: fix CONFIG_DRM_KMS_HELPER mismatch warning
ti-j72xx: add config CONFIG_GPIO_SYSFS
ti-j72xx: add config CONFIG_SCSI_UFS_BSG
kver: bumping to v5.4.87
SP7021 SoC BSP
intel-x86: adds support for Dynamic Platform and Thermal Framework
intel-x86: enable Intel Uncore frequency control
intel-x86: add Intel Intel Data Accelerators support support
nxp-imx8: Correct the pci config enable pcie function
ti-j72xx: add RPMSG & REMOTEPROC configs
kver: bumping to v5.4.85

Signed-off-by: Naveen Saini <naveen.kumar.saini@intel.com>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>