iMX secondary boot collection

[#1]

• i.MX93 eMMC Secondary Boot

         i.MX93 eMMC Secondary Boot.zip

• i.MX8MP eMMC Secondary Boot

          i.MX8MP eMMC Secondary Boot.zip

• i.MX8MM SDCARD Secondary Boot Demo
  https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX8MM-SDCARD-Secondary-Boot-Demo/ta-p/...

• i.MX8QXP eMMC Secondary Boot
  https://community.nxp.com/t5/i-MX-Community-Articles/i-MX8QXP-eMMC-Secondary-Boot/ba-p/1257704#M45

•  i.MX6 SDCARD Secondary Boot Demo

          i.MX6_SDCARD_Secondary_Boot_Demo.pdf