ARM: LPC32xx: Add PWM support

This SoC has two PWM channels

Signed-off-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: Roland Stigge <stigge@antcom.de>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 973d538..ef4c66f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -566,6 +566,7 @@
 	select CLKDEV_LOOKUP
 	select GENERIC_CLOCKEVENTS
 	select USE_OF
+	select HAVE_PWM
 	help
 	  Support for the NXP LPC32XX family of processors