mfd: Several MFD drivers should depend on GENERIC_HARDIRQS

commit 5fb4d38b ("mfd: Move WM831x to
generic IRQ") didn't take into account that genirq support depends on
GENERIC_HARDIRQS.

Additionally, 2.6.34-rc1 added:
  - commit 2afa62ea ("mfd: Use genirq in
    88pm860x").
  - commit 760e4518 ("mfd: Convert WM8350 to
    genirq").
  - commit 1f1cf8f9 ("mfd: Update irq handler
    in max8925")

Make all of them depend on GENERIC_HARDIRQS to avoid compile errors on
architectures that don't support genirq yet.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/Kconfig

@@ -11,7 +11,7 @@ config MFD_CORE
 
 config MFD_88PM860X
 	bool "Support Marvell 88PM8606/88PM8607"
-	depends on I2C=y
+	depends on I2C=y && GENERIC_HARDIRQS
 	select MFD_CORE
 	help
 	  This supports for Marvell 88PM8606/88PM8607 Power Management IC.
@@ -205,7 +205,7 @@ config PMIC_ADP5520
 
 config MFD_MAX8925
 	bool "Maxim Semiconductor MAX8925 PMIC Support"
-	depends on I2C=y
+	depends on I2C=y && GENERIC_HARDIRQS
 	select MFD_CORE
 	help
 	  Say yes here to support for Maxim Semiconductor MAX8925. This is
@@ -226,7 +226,7 @@ config MFD_WM8400
 config MFD_WM831X
 	bool "Support Wolfson Microelectronics WM831x/2x PMICs"
 	select MFD_CORE
-	depends on I2C=y
+	depends on I2C=y && GENERIC_HARDIRQS
 	help
 	  Support for the Wolfson Microelecronics WM831x and WM832x PMICs.
 	  This driver provides common support for accessing the device,
@@ -235,6 +235,7 @@ config MFD_WM831X
 
 config MFD_WM8350
 	bool
+	depends on GENERIC_HARDIRQS
 
 config MFD_WM8350_CONFIG_MODE_0
 	bool
@@ -287,7 +288,7 @@ config MFD_WM8352_CONFIG_MODE_3
 config MFD_WM8350_I2C
 	bool "Support Wolfson Microelectronics WM8350 with I2C"
 	select MFD_WM8350
-	depends on I2C=y
+	depends on I2C=y && GENERIC_HARDIRQS
 	help
 	  The WM8350 is an integrated audio and power management
 	  subsystem with watchdog and RTC functionality for embedded