clk: qcom: ipq8074: add NSS clocks

IPQ8074 has NSS (Network Switching System) which has 2 UBI cores
and hardware crypto engine. Some clocks are separate for each UBI
core and remaining NSS clocks are common. The BIAS_PLL (300 Mhz)
and BIAS_PLL_NSS_NOC (416.5 Mhz) are external fixed clocks and
will be registered from dtsi or NSS driver.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>