platform: msm: Add qpnp-pwm driver

Add the qpnp-pwm driver to support LPG/PWM devices in Qualcomm
plug-and-play (QPNP) PMIC chips.  QPNP chips make use of
Qualcomm's SPMI register convention. LPG module provides a superset
of functionality provided by PWM device such as user defined pattern
generation, driving multiple PWM channels etc.

Change-Id: I29a22c6e655612d93cac10e6eea76383d37775e2
Signed-off-by: Jay Chokshi <jchokshi@codeaurora.org>
diff --git a/drivers/platform/msm/Makefile b/drivers/platform/msm/Makefile
index 92eb492..6deb6ee 100644
--- a/drivers/platform/msm/Makefile
+++ b/drivers/platform/msm/Makefile
@@ -4,3 +4,4 @@
 obj-$(CONFIG_MSM_SSBI) += ssbi.o
 obj-$(CONFIG_USB_BAM) += usb_bam.o
 obj-$(CONFIG_SPS) += sps/
+obj-$(CONFIG_QPNP_PWM) += qpnp-pwm.o