refactor(st-i2c): use fdt_read_uint32_default()

The function stm32_i2c_get_setup_from_fdt() was using fdt_getprop() to
to get some i2c node properties, and set a default value if the node
was not fo

refactor(st-i2c): use fdt_read_uint32_default()

The function stm32_i2c_get_setup_from_fdt() was using fdt_getprop() to
to get some i2c node properties, and set a default value if the node
was not found. The function fdt_read_uint32_default() already does
this in a simpler way.
Remove useless STM32_I2C_SPEED_DEFAULT.

Change-Id: I74c6295bb5765ee7c7e0a9ae020b741f1fe022a6
Signed-off-by: Yann Gautier <yann.gautier@st.com>

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feat(st): use newly introduced clock framework

Replace calls to stm32mp_clk_enable() / stm32mp_clk_disable() /
stm32mp_clk_get_rate() with clk_enable() / clk_disable() /
clk_get_rate().

Change-Id:

feat(st): use newly introduced clock framework

Replace calls to stm32mp_clk_enable() / stm32mp_clk_disable() /
stm32mp_clk_get_rate() with clk_enable() / clk_disable() /
clk_get_rate().

Change-Id: I15d2ce57b9499211fa522a1b53eeee9cf584c111
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>

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