disable uart0 uart7 uart9

hc

2023-11-22 983d7f83616922a6439b4352d1b3af488ee27f95

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# From http://brick.kernel.dk/snaps/MD5SUMS
md5    9a6ca62330c8adb0b6a4ea6cf8a55694    blktrace-1.1.0.tar.gz