cmake: llvm: Use '=' for --config to improve compatibility

Replaces space with an equal sign when assigning the clang configuration
file to the --config parameter. This change improves compatibility with
tools that parse the compilation database and expect compiler arguments
to be separated by space.

Signed-off-by: Tim Pambor <[email protected]>

Author: tpambor

cmake/zephyr/llvm/target.cmake

@@ -37,7 +37,5 @@ if(DEFINED triple)
   unset(triple)
 endif()
 
-list(APPEND TOOLCHAIN_C_FLAGS --config
-	${ZEPHYR_SDK_INSTALL_DIR}/cmake/zephyr/llvm/clang_compiler_rt.cfg)
-list(APPEND TOOLCHAIN_LD_FLAGS --config
-	${ZEPHYR_SDK_INSTALL_DIR}/cmake/zephyr/llvm/clang_compiler_rt.cfg)
+list(APPEND TOOLCHAIN_C_FLAGS --config=${ZEPHYR_SDK_INSTALL_DIR}/cmake/zephyr/llvm/clang_compiler_rt.cfg)
+list(APPEND TOOLCHAIN_LD_FLAGS --config=${ZEPHYR_SDK_INSTALL_DIR}/cmake/zephyr/llvm/clang_compiler_rt.cfg)