HPS eMMC Boot

Note: This example is not availble in this release. Refer to https://altera-fpga.github.io/rel-24.3.1/embedded-designs/agilex-7/f-series/soc/emmc/ug-emmc-agx7f-soc/ for the latest available version. Also refer to https://altera-fpga.github.io/rel-26.1/embedded-designs/agilex-7/f-series/soc/gsrd/ug-gsrd-agx7f-soc/ for the latest HPS Baseline System Example Design which now supports booting from eMMC.