arm: [MVE intrinsics] factorize vmovnbq vmovntq vqmovnbq vqmovntq vqmovunbq vqmovuntq

Factorize vmovnbq vmovntq vqmovnbq vqmovntq vqmovunbq vqmovuntq so
that they use the same pattern.

2022-09-08  Christophe Lyon  <christophe.lyon@arm.com>

	gcc/
	* config/arm/iterators.md (MVE_MOVN, MVE_MOVN_M): New.
	(mve_insn): Add vmovnb, vmovnt, vqmovnb, vqmovnt, vqmovunb,
	vqmovunt.
	(isu): Likewise.
	(supf): Add VQMOVUNBQ_M_S, VQMOVUNBQ_S, VQMOVUNTQ_M_S,
	VQMOVUNTQ_S.
	* config/arm/mve.md (mve_vmovnbq_<supf><mode>)
	(mve_vmovntq_<supf><mode>, mve_vqmovnbq_<supf><mode>)
	(mve_vqmovntq_<supf><mode>, mve_vqmovunbq_s<mode>)
	(mve_vqmovuntq_s<mode>): Merge into ...
	(@mve_<mve_insn>q_<supf><mode>): ... this.
	(mve_vmovnbq_m_<supf><mode>, mve_vmovntq_m_<supf><mode>)
	(mve_vqmovnbq_m_<supf><mode>, mve_vqmovntq_m_<supf><mode>)
	(mve_vqmovunbq_m_s<mode>, mve_vqmovuntq_m_s<mode>): Merge into ...
	(@mve_<mve_insn>q_m_<supf><mode>): ... this.