arm: [MVE intrinsics] rework vmullbq_poly vmulltq_poly

arm: [MVE intrinsics] rework vmullbq_poly vmulltq_poly

Implement vmull[bt]q_poly using the new MVE builtins framework.

2023-08-14  Christophe Lyon  <christophe.lyon@linaro.org>

	gcc/
	* config/arm/arm-mve-builtins-base.cc (vmullbq_poly)
	(vmulltq_poly): New.
	* config/arm/arm-mve-builtins-base.def (vmullbq_poly)
	(vmulltq_poly): New.
	* config/arm/arm-mve-builtins-base.h (vmullbq_poly)
	(vmulltq_poly): New.
	* config/arm/arm_mve.h (vmulltq_poly): Remove.
	(vmullbq_poly): Remove.
	(vmullbq_poly_m): Remove.
	(vmulltq_poly_m): Remove.
	(vmullbq_poly_x): Remove.
	(vmulltq_poly_x): Remove.
	(vmulltq_poly_p8): Remove.
	(vmullbq_poly_p8): Remove.
	(vmulltq_poly_p16): Remove.
	(vmullbq_poly_p16): Remove.
	(vmullbq_poly_m_p8): Remove.
	(vmullbq_poly_m_p16): Remove.
	(vmulltq_poly_m_p8): Remove.
	(vmulltq_poly_m_p16): Remove.
	(vmullbq_poly_x_p8): Remove.
	(vmullbq_poly_x_p16): Remove.
	(vmulltq_poly_x_p8): Remove.
	(vmulltq_poly_x_p16): Remove.
	(__arm_vmulltq_poly_p8): Remove.
	(__arm_vmullbq_poly_p8): Remove.
	(__arm_vmulltq_poly_p16): Remove.
	(__arm_vmullbq_poly_p16): Remove.
	(__arm_vmullbq_poly_m_p8): Remove.
	(__arm_vmullbq_poly_m_p16): Remove.
	(__arm_vmulltq_poly_m_p8): Remove.
	(__arm_vmulltq_poly_m_p16): Remove.
	(__arm_vmullbq_poly_x_p8): Remove.
	(__arm_vmullbq_poly_x_p16): Remove.
	(__arm_vmulltq_poly_x_p8): Remove.
	(__arm_vmulltq_poly_x_p16): Remove.
	(__arm_vmulltq_poly): Remove.
	(__arm_vmullbq_poly): Remove.
	(__arm_vmullbq_poly_m): Remove.
	(__arm_vmulltq_poly_m): Remove.
	(__arm_vmullbq_poly_x): Remove.
	(__arm_vmulltq_poly_x): Remove.