PR target/89093
	* config/aarch64/aarch64.c (aarch64_process_one_target_attr): Don't skip
	whitespace at the start of target attribute string.

	* gcc.target/aarch64/pr89093.c: New test.
	* gcc.target/aarch64/pr63304_1.c: Remove space from target string.

From-SVN: r270690