ARM: mxs: Add pwm clocks and device registration

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index 55bf075..836cc81 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -8,10 +8,12 @@
 config SOC_IMX23
 	bool
 	select CPU_ARM926T
+	select HAVE_PWM
 
 config SOC_IMX28
 	bool
 	select CPU_ARM926T
+	select HAVE_PWM
 
 comment "MXS platforms:"