Remove IAR assembler macros containing quotes

IAR assembler 7.80 has some problems handling difficult macros, leading
to immediate exit with return value -11.

In particular, a URL string has been causing problems, presumably due to
the "//" resembling a comment.

A previous escaping workaround in 0d97803 seemed to work, but the crash
has still been seen with a particular target.

Previous creation of the extended command line file for the IAR
assembler was stripping quotes from macros. This rendered the resulting
definitions for string-containing macros incorrect, which means that we
can assume no assembler code is currently relying on them.

Therefore, as a precautionary measure to avoid the crash, simply remove
all macros containing strings when creating them for IAR. This
apparently clears the crashes seen during testing of
#8023

Author: kjbracey

tools/toolchains/iar.py

@@ -167,7 +167,7 @@ def get_compile_options(self, defines, includes, for_asm=False):
         opts = ['-D%s' % d for d in defines]
         if for_asm:
             config_macros = self.config.get_config_data_macros()
-            macros_cmd = ['"-D%s"' % d.replace('"', '').replace('//','/\/') for d in config_macros]
+            macros_cmd = ['"-D%s"' % d for d in config_macros if not '"' in d]
             if self.RESPONSE_FILES:
                 via_file = self.make_option_file(
                     macros_cmd, "asm_macros_{}.xcl")