Some boards need more than the default maximum of 4 uarts. This has no
impact unless 8250.nr_uarts is specified on the cmdline to increase
the number of runtime uarts from the GKI default of 0.
Bug: 280015873
Signed-off-by: Alistair Delva <adelva@google.com>
Change-Id: I5ba4e1dcce4f4e01b7d306fa3ab05319768eef00