x86/vsmp: Remove dependency on pv_irq_ops

vSMP dependency on pv_irq_ops has been removed some years ago, but the code
still deals with pv_irq_ops.

In short, "cap & ctl & (1 << 4)" is always returning 0, so all
PARAVIRT/PARAVIRT_XXL code related to that can be removed.

However, the rest of the code depends on CONFIG_PCI, so fix it accordingly.

Rename set_vsmp_pv_ops to set_vsmp_ctl as the original name does not make
sense anymore.

Signed-off-by: Eial Czerwacki <eial@scalemp.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Shai Fultheim <shai@scalemp.com>
Cc: Juergen Gross <jgross@suse.com>
Link: https://lkml.kernel.org/r/1541439114-28297-1-git-send-email-eial@scalemp.com