Merge changes from topic "mb/drtm-preparatory-patches" into integration

Merge changes from topic "mb/drtm-preparatory-patches" into integration

* changes:
  docs(drtm): steps to run DRTM implementation
  docs(drtm): add platform APIs for DRTM
  feat(drtm): flush dcache before DLME launch
  feat(drtm): invalidate icache before DLME launch
  feat(drtm): ensure that passed region lies within Non-Secure region of DRAM
  feat(fvp): add plat API to validate that passed region is non-secure
  feat(drtm): ensure that no SDEI event registered during dynamic launch
  feat(drtm): prepare EL state during dynamic launch
  feat(drtm): prepare DLME data for DLME launch
  feat(drtm): take DRTM components measurements before DLME launch
  feat(drtm): add a few DRTM DMA protection APIs
  feat(drtm): add remediation driver support in DRTM
  feat(fvp): add plat API to set and get the DRTM error
  feat(drtm): add Event Log driver support for DRTM
  feat(drtm): check drtm arguments during dynamic launch
  feat(drtm): introduce drtm dynamic launch function
  refactor(measured-boot): split out a few Event Log driver functions
  feat(drtm): retrieve DRTM features
  feat(drtm): add platform functions for DRTM
  feat(sdei): add a function to return total number of events registered
  feat(drtm): add PCR entries for DRTM
  feat(drtm): update drtm setup function
  refactor(crypto): change CRYPTO_SUPPORT flag to numeric
  feat(mbedtls): update mbedTLS driver for DRTM support
  feat(fvp): add crypto support in BL31
  feat(crypto): update crypto module for DRTM support
  build(changelog): add new scope for mbedTLS and Crypto module
  feat(drtm): add standard DRTM service
  build(changelog): add new scope for DRTM service
  feat(fvp): increase MAX_XLAT_TABLES entries for DRTM support
  feat(fvp): increase BL31's stack size for DRTM support
  feat(fvp): add platform hooks for DRTM DMA protection