phy: qcom: Add SNPS femto v2 USB HS phy

phy: qcom: Add SNPS femto v2 USB HS phy

Some Qualcomm SoCs newer than SDM845 feature a so-called "7nm phy"
driver, notable the SM8250 SoC which will gain U-Boot support in
upcoming patches.

Introduce a driver based on the Linux driver.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
[code cleanup, align symbol names with Linux, switch to clk/reset_bulk APIs]
Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>