arm: [MVE intrinsics] factorize vmvnq

arm: [MVE intrinsics] factorize vmvnq

Factorize vmvnq builtins so that they use parameterized names.

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

	gcc/
	* config/arm/iterators.md (mve_insn): Add vmvn.
	* config/arm/mve.md (mve_vmvnq_n_<supf><mode>): Rename into ...
	(@mve_<mve_insn>q_n_<supf><mode>): ... this.
	(mve_vmvnq_m_<supf><mode>): Rename into ...
	(@mve_<mve_insn>q_m_<supf><mode>): ... this.
	(mve_vmvnq_m_n_<supf><mode>): Rename into ...
	(@mve_<mve_insn>q_m_n_<supf><mode>): ... this.