ARM: sirf: enable sparse IRQ

Now that both irqchips for sirf are converted to not rely on
legacy domains, let's move all of the platform over to sparse
IRQ.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm/mach-prima2/common.c b/arch/arm/mach-prima2/common.c
index 15c14df..31f43ea 100644
--- a/arch/arm/mach-prima2/common.c
+++ b/arch/arm/mach-prima2/common.c
@@ -45,6 +45,7 @@
 
 DT_MACHINE_START(ATLAS6_DT, "Generic ATLAS6 (Flattened Device Tree)")
 	/* Maintainer: Barry Song <baohua.song@csr.com> */
+	.nr_irqs	= 128,
 	.map_io         = sirfsoc_map_io,
 	.init_irq	= irqchip_init,
 	.init_time	= sirfsoc_prima2_timer_init,
@@ -63,6 +64,7 @@
 
 DT_MACHINE_START(PRIMA2_DT, "Generic PRIMA2 (Flattened Device Tree)")
 	/* Maintainer: Barry Song <baohua.song@csr.com> */
+	.nr_irqs	= 128,
 	.map_io         = sirfsoc_map_io,
 	.init_irq	= irqchip_init,
 	.init_time	= sirfsoc_prima2_timer_init,