This adds clock driver for airoha en7523/en7529/en7562 SoCs. The code
is based on corresponding linux driver.

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>

Use common helper to get CHIP_SCU registers.

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>

Add driver for controlling the reset lines of AN7581. This is a detached
version of the clock controller driver present in Linux only used to
control reset lines. Driver gets loaded with the bind of the clock
driver and doesn't require a compatible. This is needed as they share
the same registers.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>

Add support for Airoha AN7581 SoC clock driver. This mainly needed for
eMMC support to correctly get the current clock applied.

Based on the Linux clk-en7523.c but majorly reworked for U-Boot that
doesn't require CCF subsystem.

Major modification, support for set_rate, realtime get_rate and split
for reset part to a different driver.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>