muvirt-lede: update with QEMU MTD driver and SDHC timeout workaround

These changes are intended for the recovery firmware
2 jobs for master in 70 minutes and 42 seconds (queued for 2 minutes and 46 seconds)
latest
Status Name Job ID Coverage
  Test
passed build-traverse-ls1088 #1674316724
x86 dynamic dynamic_runner_x86_aws

01:10:42

failed build-traverse-ls1088 #1674293136
x86 dynamic dynamic_runner_x86_aws

00:00:42