testsuite: Skip arm/pure-code tests for arm*-*-uclinuxfdpiceabi

testsuite: Skip arm/pure-code tests for arm*-*-uclinuxfdpiceabi

FDPIC it uses PIC code, which is incompatible with -mpure-code, so we
want to skip these tests for arm*-*-uclinuxfdpiceabi.

This patch also fixes a typo where the final closing bracket was
commented out.

2020-08-20  Christophe Lyon  <christophe.lyon@linaro.org>

	gcc/testsuite/
	* gcc.target/arm/pure-code/pure-code.exp: Skip for
	arm*-*-uclinuxfdpiceabi. Fix missing closing bracket.