arm64: dts: qcom: sdm845-*: fix uart6 aliases

Some devices have been using hsuart0 as an alias for the bluetooth UART,
rename this to serial1

Signed-off-by: Caleb Connolly <caleb@connolly.tech>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221016172944.1892206-4-kc@postmarketos.org