dt-bindings: clock: qcom,gcc-apq8064: Fix typo in compatible and split apq8084

The qcom,gcc-apq8064.yaml was meant to describe only APQ8064 and APQ8084
should have slightly different bindings (without Qualcomm thermal sensor
device).  Add new bindings for APQ8084.

Fixes: a469bf89 ("dt-bindings: clock: simplify qcom,gcc-apq8064 Documentation")
Reported-by: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220426064241.6379-1-krzysztof.kozlowski@linaro.org