[ARM] pxa/magician: Enable backlight

Magician uses the generic PWM backlight driver,
so select HAVE_PWM.

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/Kconfig b/arch/arm/mach-pxa/Kconfig
index af5b5b4..a2ed2aa 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -295,6 +295,7 @@
 	bool "Enable HTC Magician Support"
 	select PXA27x
 	select IWMMXT
+	select HAVE_PWM
 	select PXA_HAVE_BOARD_IRQS
 
 config MACH_MIOA701