fix spelling of -linker-output-auto-nolto-rel

fix spelling of -linker-output-auto-nolto-rel

The transposition nolto -> notlo is confusing and it makes the long
name even harder to read than it already is - I kept reading it as
"not lo" until I realized it was a simple typo.

Fixes: 5269b24605b1 (Silence warning in LTO mode on VxWorks)

lto-plugin/
	* lto-plugin.c: Fix -linker-output-auto-notlo-rel ->
	-linker-output-auto-nolto-rel typo.
	(process_option): Adjust accordingly, accepting both old and
	new spelling.

gcc/
	* config/vxworks.h (LTO_PLUGIN_SPEC): Adapt to corrected
	spelling of -linker-output-auto-nolto-rel.