Integrate u-boot-seco-imx/seco_lf_v2021.04-gm_c12

Commit: edgehog/bsp/nxp/u-boot-seco-imx@088040c0

[C12] fix SD boot issue, upgrade straps management

• code refactoring
• add SD to boot list
• fix straps recognition
• complete board strap print
• CPU, PCIe straps: update devicetree
• HDMI/DP, SPI | CAN/RTC straps: select video and peripherals overlay lists (multiple configurations)
  • for seco_config tool
  • HDMI video option
  • WIFI, CAN/RTC peripherals options