xtensa: set toolchain variant per SoC

The toolchain variant per SoC is not always the soc name, so set this
per SoC and use this in the SDK instead of hardcoding the soc name.

Signed-off-by: Anas Nashif <anas.nashif@intel.com>

soc/xtensa/intel_adsp/CMakeLists.txt

@@ -3,4 +3,5 @@
 # Copyright (c) 2020 Intel Corporation
 # SPDX-License-Identifier: Apache-2.0
 
+
 add_subdirectory(common)

soc/xtensa/intel_adsp/cavs_v15/Kconfig.defconfig.series

@@ -7,6 +7,10 @@ config SOC_SERIES
 	string
 	default "cavs_v15"
 
+config SOC_TOOLCHAIN_NAME
+	string
+	default "intel_apl_adsp"
+
 config SOC
 	string
 	default "intel_apl_adsp" if SOC_INTEL_CAVS_APL

soc/xtensa/intel_adsp/cavs_v18/Kconfig.defconfig.series

@@ -7,6 +7,10 @@ config SOC_SERIES
 	string
 	default "cavs_v18"
 
+config SOC_TOOLCHAIN_NAME
+	string
+	default "intel_s1000"
+
 config SOC
 	string
 	default "intel_cavs_18"

soc/xtensa/intel_adsp/cavs_v20/Kconfig.defconfig.series

@@ -7,6 +7,10 @@ config SOC_SERIES
 	string
 	default "cavs_v20"
 
+config SOC_TOOLCHAIN_NAME
+	string
+	default "intel_s1000"
+
 config SOC
 	string
 	default "intel_cavs_20"

soc/xtensa/intel_adsp/cavs_v25/Kconfig.defconfig.series

@@ -7,6 +7,10 @@ config SOC_SERIES
 	string
 	default "cavs_v25"
 
+config SOC_TOOLCHAIN_NAME
+	string
+	default "intel_s1000"
+
 config SOC
 	string
 	default "intel_cavs_25"

soc/xtensa/intel_s1000/Kconfig.defconfig

@@ -12,6 +12,10 @@ config SOC_SERIES
 	string
 	default "intel_s1000"
 
+config SOC_TOOLCHAIN_NAME
+	string
+	default "intel_s1000"
+
 config IRQ_OFFLOAD_INTNUM
 	default 0
 

soc/xtensa/sample_controller/Kconfig.defconfig

@@ -9,6 +9,10 @@ if SOC_XTENSA_SAMPLE_CONTROLLER
 config SOC
 	default "sample_controller"
 
+config SOC_TOOLCHAIN_NAME
+	string
+	default "sample_controller"
+
 config IRQ_OFFLOAD_INTNUM
 	default 7