arm: [MVE intrinsics] factorize vdupq

arm: [MVE intrinsics] factorize vdupq

Factorize vdup builtins so that they use parameterized names.

2022-10-25  Christophe Lyon  <christophe.lyon@arm.com>

	gcc/
	* config/arm/iterators.md (MVE_FP_M_N_VDUPQ_ONLY)
	(MVE_FP_N_VDUPQ_ONLY): New.
	(mve_insn): Add vdupq.
	* config/arm/mve.md (mve_vdupq_n_f<mode>): Rename into ...
	(@mve_<mve_insn>q_n_f<mode>): ... this.
	(mve_vdupq_n_<supf><mode>): Rename into ...
	(@mve_<mve_insn>q_n_<supf><mode>): ... this.
	(mve_vdupq_m_n_<supf><mode>): Rename into ...
	(@mve_<mve_insn>q_m_n_<supf><mode>): ... this.
	(mve_vdupq_m_n_f<mode>): Rename into ...
	(@mve_<mve_insn>q_m_n_f<mode>): ... this.