soc: nxp: imxrt: Prepare imxrt6xx soc for AMP support

imxrt6xx are dual core devices featuring an ARM Cortex-M33
core and an Cadence Xtensa HIFI4 Audio DSP.

Currently only m33 core is supported. In order to support
the Cadence DSP we need first to do some code-reorganization
for m33.

We start by moving all cm33 related code to its own directory
and introduce the cpuclusters property in soc.yml file.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>

tests/boot/test_mcuboot/testcase.yaml

@@ -32,7 +32,7 @@ tests:
       - mimxrt1160_evk/mimxrt1166/cm7
       - mimxrt1170_evk/mimxrt1176/cm7
       - mimxrt595_evk/mimxrt595s/cm33
-      - mimxrt685_evk
+      - mimxrt685_evk/mimxrt685s/cm33
       - nrf52840dk/nrf52840
     integration_platforms:
       - frdm_k64f

tests/drivers/build_all/pwm/testcase.yaml

@@ -23,7 +23,7 @@ tests:
   drivers.pwm.mcux.build:
     platform_allow: mimxrt1064_evk
   drivers.pwm.mcux.sctimer.build:
-    platform_allow: mimxrt685_evk
+    platform_allow: mimxrt685_evk/mimxrt685s/cm33
   drivers.pwm.rv32m1.tpm.build:
     platform_allow: rv32m1_vega/openisa_rv32m1/ri5cy
   drivers.pwm.sifive.build:

tests/drivers/counter/counter_basic_api/testcase.yaml

@@ -34,7 +34,7 @@ tests:
       - drivers
       - counter
     depends_on: counter
-    platform_allow: mimxrt685_evk
+    platform_allow: mimxrt685_evk/mimxrt685s/cm33
     timeout: 400
     extra_args:
       DTC_OVERLAY_FILE="boards/mimxrt685_evk_rtc_1khz.overlay"

tests/drivers/i2s/i2s_api/testcase.yaml

@@ -7,7 +7,7 @@ tests:
     filter: not CONFIG_I2S_TEST_USE_GPIO_LOOPBACK
     platform_exclude:
       - mimxrt595_evk/mimxrt595s/cm33
-      - mimxrt685_evk
+      - mimxrt685_evk/mimxrt685s/cm33
   drivers.i2s.gpio_loopback:
     depends_on:
       - i2s
@@ -19,6 +19,6 @@ tests:
     harness: ztest
     platform_exclude:
       - mimxrt595_evk/mimxrt595s/cm33
-      - mimxrt685_evk
+      - mimxrt685_evk/mimxrt685s/cm33
     harness_config:
       fixture: gpio_loopback

tests/drivers/regulator/voltage/testcase.yaml

@@ -17,7 +17,7 @@ tests:
       fixture: npm6001_ek_to_adc
   drivers.regulator.voltage.nxp:
     platform_allow:
-      - mimxrt685_evk
+      - mimxrt685_evk/mimxrt685s/cm33
       - lpcxpresso55s36
     harness_config:
       fixture: gpio_loopback