hppa: Don't canonicalize operand order of scaled index addresses

pa_print_operand handles both operand orders for scaled index
addresses, so it isn't necessary to canonicalize the order of
operands.

2024-09-09  John David Anglin  <danglin@gcc.gnu.org>

gcc/ChangeLog:

	* config/pa/pa.cc (pa_legitimate_address_p): Don't
	canonicalize operand order of scaled index addresses.