Change in coreboot[master]: qualcomm/sc7180: Clean up drivers with common clock

[Ravi kumar (Code Review)]

Attention is currently required from: Shelley Chen, Ravi kumar, Paul Menzel, mturney mturney, Julius Werner.
Hello Shelley Chen, build bot (Jenkins), Taniya Das, mturney mturney, Julius Werner,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/56587

to look at the new patch set (#8).

Change subject: qualcomm/sc7180: Clean up drivers with common clock
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qualcomm/sc7180: Clean up drivers with common clock

As we move to use the common clock driver, the sc7180 clock driver,
watchdog and display drivers requires few cleanups, thus update the
impacted drivers.

Earlier the display client is expected to provide 2n divider value,
as the divider value in register is in form "2n-1".
mdss_clk_cfg.div = half_divider ? (half_divider - 1) : 0;

The older convention in the upcoming patches would be replaced with
the common macro of QCOM_CLOCK_DIV, thus need the divider needs to
be updated.
mdss_clk_cfg.div = half_divider ? QCOM_CLOCK_DIV(half_divider) : 0;

To accommodate impacting the functionality, the half_divider is taken
care in the clock driver.

BUG=b:182963902
TEST=Validated on qualcomm sc7180 development board

Change-Id: Ic334fd0d43e5b4b1e43a27d5db7665f0bc151d66
Signed-off-by: Taniya Das 
---
M src/soc/qualcomm/sc7180/clock.c
M src/soc/qualcomm/sc7180/display/dsi_phy.c
M src/soc/qualcomm/sc7180/include/soc/clock.h
M src/soc/qualcomm/sc7180/watchdog.c
4 files changed, 70 insertions(+), 68 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/87/56587/8