The AUDIOMIX_TUPLE_ROOT() macro returns the ID of the root clock,
while CCM_TUPLE_ROOT() returns the address of the register corresponding
to the root clock. As such, the 'rootClk' variable can't be directly used
with CCM_REG_CLR(), which expects the address of the CCM register for the
root clock.

Fix this by:

	1) Introducing 2 new macros: CCM_TUPLE_ROOT_ID() and
	CCM_TUPLE_ROOT_ID(), which extract the ID of the root clock.
	This way, we can use the resulting ID in the same way for clocks
	managed by the AUDIOMIX block control and the CCM.

	2) Translating the resulting root clock ID from step 1 to a
	CCM register.

Signed-off-by: Laurentiu Mihalcea <[email protected]>

According to the TRM, the parent of the SAI3 bus clock is not
SAI3_ROOT, but AUDIO_AHB_CLK_ROOT. As such, the currently used
root parent ID (77) is wrong.

Furthermore, CLOCK_EnableClock() and CLOCK_DisableClock() also
attempt to ungate/gate the root parent of the AUDIOMIX clock.
Since AUDIO_AHB_CLK_ROOT is the parent of multiple SAI bus clocks,
allowing it to be gated during CLOCK_DisableClock() is not safe.

As such, set the parent of SAI3 bus clock to 0xFFFF. This way,
CLOCK_DisableClock() and CLOCK_EnableClock() will not attempt
to gate/ungate it. This means that gating/ungating AUDIO_AHB_CLK_ROOT
will have to be performed explicitly.

Signed-off-by: Laurentiu Mihalcea <[email protected]>