[PATCH v2 2/2] eal: add Arm WFET in power management intrinsics

[Wathsala Wathawana Vithanage]

> RTE_WAIT_UNTIL_EQUAL_ARCH_DEFINED #ifdef block.
> > This patch fixes this issue by moving __RTE_ARM_WFE out of
> > RTE_WAIT_UNTIL_EQUAL_ARCH_DEFINED block.
> >
> > Perhaps we should change RTE_ARM_USE_WFE to something like
> > RTE_ARM_USE_WFE_IN_WAIT_UNTIL_EQUAL ?
> 
> Yes perhaps.
RTE_ARM_USE_WFE is already used in drivers/event/cnxk/cn10k_worker.h
therefore RTE_ARM_USE_WFE_IN_WAIT_UNTIL_EQUAL is not suitable.
I wouldn't mind keeping RTE_ARM_USE_WFE because "USE_WFE" sounds like an
instruction to use WFE rather than an indication of availability of the WFE instruction.