mfd: qcom-spmi-pmic: Sort the compatibles in the binding

Create some order in the list of compatibles by sorting them.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211017161218.2378176-1-bjorn.andersson@linaro.org