MIPS: Lantiq: Fix build failure

Some configs of mips like xway_defconffig are failing with the error:
arch/mips/lantiq/irq.c:209:2: error: initialization from incompatible
pointer type [-Werror]
  "icu",
  ^
arch/mips/lantiq/irq.c:209:2: error: (near initialization for
'ltq_irq_type.parent_device') [-Werror]
arch/mips/lantiq/irq.c:219:2: error: initialization from incompatible
pointer type [-Werror]
  "eiu",
  ^
arch/mips/lantiq/irq.c:219:2: error: (near initialization for
'ltq_eiu_type.parent_device') [-Werror]

The first member of the "struct irq" is no longer a pointer for the
name.

Fixes: be45beb2 ("genirq: Add runtime power management support for IRQ chips")
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Acked-by: John Crispin <john@phrozen.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13684/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/lantiq/irq.c

@@ -206,7 +206,7 @@ static void ltq_shutdown_eiu_irq(struct irq_data *d)
 }
 
 static struct irq_chip ltq_irq_type = {
-	"icu",
+	.name = "icu",
 	.irq_enable = ltq_enable_irq,
 	.irq_disable = ltq_disable_irq,
 	.irq_unmask = ltq_enable_irq,
@@ -216,7 +216,7 @@ static struct irq_chip ltq_irq_type = {
 };
 
 static struct irq_chip ltq_eiu_type = {
-	"eiu",
+	.name = "eiu",
 	.irq_startup = ltq_startup_eiu_irq,
 	.irq_shutdown = ltq_shutdown_eiu_irq,
 	.irq_enable = ltq_enable_irq,