modules: hal_nxp: mcux-sdk-ng: Fix LPC55S16 build error

Fix build error when CONFIG_MCUX_COMPONENT_driver.fro_calib is set.
Error message:

modules/hal/nxp/mcux/mcux-sdk-ng/cmake/extension/function.cmake:2084 (if)
  if given arguments:

    "IN_LIST" "NEED_WRAP_TOOLCHAINS"

The error is because, mcux sdk ng cmake functions `mcux_add_xxx` support
add content based on toolchains. CMake should set current toolchain in
CMake Variable `CONFIG_TOOLCHAIN` to use this feature.

Signed-off-by: Jason Yu <zejiang.yu@nxp.com>

Author: zejiang0jason

modules/hal_nxp/mcux/mcux-sdk-ng/basic.cmake

@@ -20,3 +20,21 @@ function(set_variable_ifdef feature_toggle variable)
     set(${variable} ON PARENT_SCOPE)
   endif()
 endfunction()
+
+# mcux sdk ng cmake functions `mcux_add_xxx` support add content based on
+# toolchains, like
+#
+#    mcux_add_library(
+#        LIBS ../iar/iar_lib_fro_calib_cm33_core0.a
+#        TOOLCHAINS iar
+#    )
+#
+# CMake should set current toolchain in CMake Variable
+# `CONFIG_TOOLCHAIN` to use this feature.
+if (${COMPILER} STREQUAL iar)
+  set(CONFIG_TOOLCHAIN iar)
+elseif (${COMPILER} STREQUAL xcc)
+  set(CONFIG_TOOLCHAIN xtensa)
+else ()
+  set(CONFIG_TOOLCHAIN armgcc)
+endif()

scripts/ci/check_compliance.py

@@ -1137,6 +1137,9 @@ def check_no_undef_outside_kconfig(self, kconf):
         "STACK_SIZE",  # Used as an example in the Kconfig docs
         "STD_CPP",  # Referenced in CMake comment
         "TEST1",
+        "TOOLCHAIN", # Defined in modules/hal_nxp/mcux/mcux-sdk-ng/basic.cmake.
+                     # It is used by MCUX SDK cmake functions to add content
+                     # based on current toolchain.
         "TOOLCHAIN_ARCMWDT_SUPPORTS_THREAD_LOCAL_STORAGE", # The symbol is defined in the toolchain
                                                     # Kconfig which is sourced based on Zephyr
                                                     # toolchain variant and therefore not visible