[ARM] pxa: add basic support for HP iPAQ hx4700 PDAs

This includes
- IrDA (pxafixp_ir),
- Buttons (gpio-keys),
- ASIC3 IRQ/GPIOs (asic3),
- EGPIOs (htc-egpio),
- ATI Imageon w3220 framebuffer (w100fb),
- Backlight (pwm-backlight),
- StrataFlash (physmap),
- Battery monitor (ds1wm,w1_ds2760,ds2760_battery)
- USB gadget support (pxa27x_udc,gpio_vbus).
- bq24022 battery charger (pda_power,bq24022)
- TSC2046 touchscreen (ads7846)

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Eric Miao <eric.miao@marvell.com>
diff --git a/arch/arm/mach-pxa/include/mach/irqs.h b/arch/arm/mach-pxa/include/mach/irqs.h
index ebf38bb..6a1d959 100644
--- a/arch/arm/mach-pxa/include/mach/irqs.h
+++ b/arch/arm/mach-pxa/include/mach/irqs.h
@@ -101,7 +101,9 @@
  */
 #define IRQ_BOARD_START		(PXA_GPIO_IRQ_BASE + PXA_GPIO_IRQ_NUM)
 
-#if defined(CONFIG_MACH_ZYLONITE)
+#if defined(CONFIG_MACH_H4700)
+#define IRQ_BOARD_END		(IRQ_BOARD_START + 70)
+#elif defined(CONFIG_MACH_ZYLONITE)
 #define IRQ_BOARD_END		(IRQ_BOARD_START + 32)
 #else
 #define IRQ_BOARD_END		(IRQ_BOARD_START + 16)