make test BSP=rpi4

Boot test - rpi4
docker run -t --rm -v /Users/admin/Workspace/rust/github.com/rust-raspberrypi-OS-tutorials/04_safe_globals:/work/tutorial -w /work/tutorial -v /Users/admin/Workspace/rust/github.com/rust-raspberrypi-OS-tutorials/04_safe_globals/../common:/work/common rustembedded/osdev-utils:2021.12 ruby ../common/tests/dispatch.rb qemu-system-aarch64 -M raspi4b -serial stdio -display none -kernel kernel8.img
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 🦀 Running 1 console I/O tests
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 1. Checking for the string: 'Stopping here'..................
 
 Console log:
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 ❌ Failure: Boot test: #<Errno::EIO: Input/output error @ io_fillbuf - fd:5 /dev/pts/1> - QEMU might have quit early
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make: *** [test_boot] Error 1