Add toolchain support for hifi1 and hifi4 cores on imxrt700 #949

Job	Run time
Setup	5s
Host Tools (linux-x86_64)	1s
Toolchain aarch64-zephyr-elf (linux-x86_64)	1s
Toolchain arc64-zephyr-elf (linux-x86_64)	1s
CMake Package (linux-x86_64)	1s
Toolchain arc-zephyr-elf (linux-x86_64)	1s
Toolchain arm-zephyr-eabi (linux-x86_64)	1s
Toolchain microblazeel-zephyr-elf (linux-x86_64)	1s
Toolchain mips-zephyr-elf (linux-x86_64)	1s
Toolchain nios2-zephyr-elf (linux-x86_64)	1s
Toolchain riscv64-zephyr-elf (linux-x86_64)	1s
Toolchain sparc-zephyr-elf (linux-x86_64)	1s
Toolchain x86_64-zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-dc233c_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-espressif_esp32_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-espressif_esp32s2_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-espressif_esp32s3_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-intel_ace15_mtpm_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-intel_ace30_ptl_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-intel_tgl_adsp_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-mtk_mt8195_adsp_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-nxp_imx_adsp_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-nxp_imx8m_adsp_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-nxp_imx8ulp_adsp_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-nxp_rt500_adsp_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-nxp_rt600_adsp_zephyr-elf (linux-x86_64)	1s
Toolchain xtensa-sample_controller_zephyr-elf (linux-x86_64)	1s
Distribution Bundle (${{ matrix.host.name }})	1s
Test (${{ matrix.testenv.name }}) Subset ${{ matrix.subset }}	1s
Test Result	1s
	34s

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