[ARM][cleanup] Use enum name instead of integer value for PARAM_SCHED_PRESSURE_ALGORITHM.

	* config/arm/arm.c (arm_option_override): Use the SCHED_PRESSURE_MODEL
	enum name for PARAM_SCHED_PRESSURE_ALGORITHM.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210471 138bc75d-0d04-0410-961f-82ee72b054a4