irqchip/armada-370-xp: Change symbol prefixes to mpic

irqchip/armada-370-xp: Change symbol prefixes to mpic

Change symbol prefixes from armada_370_xp_ or others to mpic_.

The rationale is that it is shorter and more generic (this controller
is called MPIC and is also used on Armada 38x and 39x).

Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/all/20240711115748.30268-7-kabel@kernel.org