dt-bindings: clock: qcom,gcc-sm8250: add missing bi_tcxo_ao clock

The initial SM8250 GCC driver added in commit 3e577092 ("clk: qcom:
gcc: Add global clock controller driver for SM8250") already consumed it
on the clock.  This fixes warnings like:

  sm8250-xiaomi-elish-csot.dtb: clock-controller@100000: clock-names: ['bi_tcxo', 'bi_tcxo_ao', 'sleep_clk'] is too long

Fixes: 98394efb ("dt-bindings: clock: Add SM8250 GCC clock bindings")
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230516105241.30091-1-krzysztof.kozlowski@linaro.org