testsuite: Pattern does not match when using --specs=nano.specs

testsuite: Pattern does not match when using --specs=nano.specs

When running the testsuite for newlib nano, the --specs=nano.specs
option is used.  This option prepends cpp_unique_options with
"-isystem =/include/newlib-nano" so that the newlib nano header files
override the newlib standard ones.  As the -isystem option is prepended,
the -quiet option is no longer the first option to cc1.  Adjust the test
accordingly.

Patch has been verified on Windows and Linux.

gcc/testsuite/ChangeLog:

	* gcc.misc-tests/options.exp: Allow other options before the
	-quite option for cc1.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>