Platform/ADLINK: Add new ComHpcAltPkg platform

[bexcran]

This new ComHpcAltPkg platform supports ADLINK's Ampere Altra Dev Kit, Ampere Altra Developer Platform, and AVA Developer Platform.

They're all based on the COM-HPC-ALT module and carrier with an LGA 4926 socket supporting Ampere Altra and Ampere Altra Max CPUs up to 128 cores.

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Add scripts which help users to build and flash firmware images for platforms based on the Ampere Altra SoC.

'buildfw.sh' can be used to build images containing just UEFI, or if the TF-A (ATF) binary is present TF-A + UEFI and complete 32MB SPI-NOR images. If the SYS (SMPro and PMPro microprocessors) binary is also present then a capsule update file for the SYS/SCP component of the SOC will also be built. Usage:

Usage:
  ./Platform/Ampere/buildfw.sh [options]
    
Options:
  -b <bldtype>, --build <bldtype>  Specify the build type: DEBUG or
                                  RELEASE
  -t <tc>, --toolchain <tc>        Specify the toolchain to use: GCC or
                                   CLANG
  -m <mfg>, --manufacturer <mfg>   Specify platform manufacturer
                                   (e.g. Ampere)
  -p <plat>, --platform <plat>     Specify platform to build (e.g. Jade)
  -l <kern>, --linuxboot <kern>    Build LinuxBoot firmware instead of
           full EDK2 with UEFI Shell, specifying path to flashkernel
  -f, --flash                      Copy firmware to BMC and flash
           firmware (keeping EFI variables and NVPARAMs) after building
  -F, --full-flash                 Copy firmware to BMC and flash full
           EEPROM (resetting EFI variables and NVPARAMs) after building
    
  Note: flash options require bmc.sh file with env vars BMC_HOST, BMC_USER and BMC_PASS defined
  
  Available manufacturers:
    ADLINK
    Ampere
    ASRockRack
    
  Available platforms:
    ADLINK     -> ComHpcAlt
    Ampere     -> Jade
    ASRockRack -> Altrad8ud2

'fwver.sh' is used by buildfw.sh to keep track of the number of builds done, so that firmware files of the format e.g. comhpcalt_uefi_2024-10-22-5.bin are created along with displaying the date including build number during boot.

'fwflash.sh' automates flashing the host firmware when the target system is running a BMC with OpenBMC. 'fwflash.exp' is a helper script used by 'fwflash.sh' to ssh into the BMC and run the ampere_flash_bios.sh utility. Usage:

Copies firmware to the BMC (running OpenBMC) and runs
               ampere_flash_bios.sh to flash the host.
Usage:
      fwflash.sh [options] <Host firmware file>
    
    Options:
      -f, --full   Flash the entire SPI-NOR chip (default)
      -c, --code   Flash the code (TF-A + UEFI) area
      -t, --tfa    Flash the TF-A (ATF) area
      -u, --uefi   Flash the UEFI area
      -h, --help   This help message
    
    Note: TF-A (Trusted Firmware for ARMv8-A) is the same as ATF
          (ARM Trusted Firmware).