arm: at91: at91sam9x5: fix gpio number per bank

On the at91sam9x5 SoC series, GPIO banks B and D only have 19 and 22
pins. So add a property to set this parameter.

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi
index 507a84d..065698a 100644
--- a/arch/arm/boot/dts/at91sam9x5.dtsi
+++ b/arch/arm/boot/dts/at91sam9x5.dtsi
@@ -133,6 +133,7 @@
 					interrupts = <2 4 1>;
 					#gpio-cells = <2>;
 					gpio-controller;
+					#gpio-lines = <19>;
 					interrupt-controller;
 					#interrupt-cells = <2>;
 				};
@@ -153,6 +154,7 @@
 					interrupts = <3 4 1>;
 					#gpio-cells = <2>;
 					gpio-controller;
+					#gpio-lines = <22>;
 					interrupt-controller;
 					#interrupt-cells = <2>;
 				};