clk: rockchip: Add rk3576 clock driver

Add basic clock for rk3576 which including cpu, mmc, i2c,
pwm ...clocks init.

- init spll\ppll\cpll\cci in spl
- fix cci init
- fix up spll
- fix the dclk set

clk: rockchip: Add rk3576 clock driver

Add basic clock for rk3576 which including cpu, mmc, i2c,
pwm ...clocks init.

- init spll\ppll\cpll\cci in spl
- fix cci init
- fix up spll
- fix the dclk setting rule
- relase bigcore biu\cru\grf in spl
- add ufs ref clk setting
- Remove PCIe relevant
- fix hdmi phy name
- add dsihost and ebc clk setting
- add dsihot getting
- fix dclk getting freq error

Change-Id: I2658bf3f77f6386a6f124f624a0658d61cf90fc2
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Guochun Huang <hero.huang@rock-chips.com>
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>

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