linux-firmware: update to 20260309, enable compressed firmware #67195

Job	Run time
Lint templates	1m 18s
Build packages (aarch64, x86_64, glibc, linux/amd64, 0)	10m 55s
Build packages (armv7l, x86_64, glibc, linux/amd64, 0)	10m 16s
Build packages (x86_64, x86_64, glibc, linux/amd64, 1)	11m 22s
Build packages (aarch64-musl, x86_64-musl, musl, linux/amd64, 0)	10m 47s
Build packages (i686, i686, glibc, linux/386, 1)	11m 50s
Build packages (armv6l-musl, x86_64-musl, musl, linux/amd64, 0)	12m 21s
Build packages (x86_64-musl, x86_64-musl, musl, linux/amd64, 1)	11m 41s
	1h 20m 30s

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