arm: [MVE intrinsics] factorize vmlaq_n vmlasq_n vqdmlahq_n vqdmlashq_n vqrdmlahq_n...

arm: [MVE intrinsics] factorize vmlaq_n vmlasq_n vqdmlahq_n vqdmlashq_n vqrdmlahq_n vqrdmlashq_n

Factorize vmlaq_n, vmlasq_n, vqdmlahq_n, vqdmlashq_n, vqrdmlahq_n,
vqrdmlashq_n builtins so that they use the same parameterized names.

2022-12-12  Christophe Lyon  <christophe.lyon@arm.com>

	gcc/
	* config/arm/iterators.md (MVE_VMLxQ_N): New.
	(mve_insn): Add vmla, vmlas, vqdmlah, vqdmlash, vqrdmlah,
	vqrdmlash.
	(supf): Add VQDMLAHQ_N_S, VQDMLASHQ_N_S, VQRDMLAHQ_N_S,
	VQRDMLASHQ_N_S.
	* config/arm/mve.md (mve_vmlaq_n_<supf><mode>)
	(mve_vmlasq_n_<supf><mode>, mve_vqdmlahq_n_<supf><mode>)
	(mve_vqdmlashq_n_<supf><mode>, mve_vqrdmlahq_n_<supf><mode>)
	(mve_vqrdmlashq_n_<supf><mode>): Merge into ...
	(@mve_<mve_insn>q_n_<supf><mode>): ... this.