nxp: adsp: enable usage of DCACHE API

With the transition to HWMv2, `CONFIG_CPU_HAS_DCACHE` is no
longer selected. This causes issues with Sound Open Firmware
since this configuration allows the usage of DCACHE-related
cache management operations. As such, to fix said issues,
select `CONFIG_CPU_HAS_DCACHE` on all NXP ADSP SOCs.

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>

soc/nxp/imx/imx8/Kconfig

@@ -10,6 +10,7 @@ config SOC_MIMX8QM_ADSP
 	select GEN_ISR_TABLES
 	select XTENSA_SMALL_VECTOR_TABLE_ENTRY
 	select HAS_MCUX
+	select CPU_HAS_DCACHE
 
 config MCUX_CORE_SUFFIX
 	default "_dsp" if SOC_MIMX8QM_ADSP

soc/nxp/imx/imx8m/Kconfig

@@ -48,6 +48,7 @@ config SOC_MIMX8MP_ADSP
 	select HAS_MCUX_CCM if CLOCK_CONTROL
 	select HAS_MCUX_IOMUXC if PINCTRL
 	select PINCTRL_IMX if HAS_MCUX_IOMUXC
+	select CPU_HAS_DCACHE
 
 config SOC_MIMX8MP_M7
 	select ARM

soc/nxp/imx/imx8ulp/Kconfig

@@ -9,3 +9,4 @@ config SOC_MIMX8ULP_ADSP
 	select ATOMIC_OPERATIONS_BUILTIN
 	select GEN_ISR_TABLES
 	select XTENSA_SMALL_VECTOR_TABLE_ENTRY
+	select CPU_HAS_DCACHE

soc/nxp/imx/imx8x/Kconfig

@@ -10,6 +10,7 @@ config SOC_MIMX8QXP_ADSP
 	select GEN_ISR_TABLES
 	select XTENSA_SMALL_VECTOR_TABLE_ENTRY
 	select HAS_MCUX
+	select CPU_HAS_DCACHE
 
 config MCUX_CORE_SUFFIX
 	default "_dsp" if SOC_MIMX8QXP_ADSP