irqchip/gic-common: Remove sync_access callback

irqchip/gic-common: Remove sync_access callback

The gic_configure_irq(), gic_dist_config(), and gic_cpu_config()
functions each take an optional "sync_access" callback, but in almost
all cases this is not used. The only user is the GICv3 driver's
gic_cpu_init() function, which uses gic_redist_wait_for_rwp() as the
"sync_access" callback for gic_cpu_config().

It would be simpler and clearer to remove the callback and have the
GICv3 driver call gic_redist_wait_for_rwp() explicitly after
gic_cpu_config().

Remove the "sync_access" callback, and call gic_redist_wait_for_rwp()
explicitly in the GICv3 driver.

There should be no functional change as a result of this patch.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Alexandru Elisei <alexandru.elisei@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240617111841.2529370-3-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>