ARM: dts: msm: Correct the haptics DT properties for PMI8937

- Include msm8917-pmi8937.dtsi in msm8917-qrd.dtsi for
vibrator driver to probe as overlay is enabled.
- Correct the haptics device tree properties to be aligned with the
leds-qpnp-haptics driver.
- Included spmi.h and irq.h as fix for compilation.
- Removed led_flash0 entry from msm8917-qrd-overlay.dts as being
duplicated after including msm8917-pmi8937.dtsi.

Change-Id: If88648dcf799d40817e14c823aec1e1b8787feaa
Signed-off-by: Himanshu Agrawal <hagraw@codeaurora.org>
Signed-off-by: Naitik Bharadiya <bharad@codeaurora.org>