Update git submodules

* Update external/lk from branch 'main'
  to 9664bb509416e656635580b9c5b16dbee6d3ed3f
  - arch: arm64: Add bootmode with memsize in dtb
    
    Add optional boot mode where x0 contains a pointer to device tree
    instead of the memsize. Set the ARM64_BOOT_PROTOCOL make variable to
    X0_DTB if x0 contains a pointer to a device tree.
    
    Bug: 297275002
    Change-Id: I0b3de557e959dea30838f1a546d24e7633678220
    

* Update trusty/kernel from branch 'main'
  to 624ef043abb43abf73650029f027c86d9b5760fc
  - platform: generic-arm64: Add dtb boot support
    
    Add support for boot protocol with dtb in x0 instead of ram size. Find
    gic (v3) registers in device tree instead of making an smc call.
    
    TODO: Add gicv2 support
    
    Bug: 297275002
    Change-Id: Ie30b71cb6b7897438bf953b04ad1f41583ce6d97
    
2 files changed