[PATCH] drm/msm: fix build warning - missing prototype

[Nicholas Mc Guire]

fix build warning when building edp/edp_aux.o due to missing
prototype for edp_aux_transfer.

Signed-off-by: Nicholas Mc Guire <hofrat@xxxxxxxxx>
---
building drivers/gpu/drm/msm/msm.ko gives the following warning:
drivers/gpu/drm/msm/edp/edp_aux.c:118:9: warning: no previous prototype for 'edp_aux_transfer' [-Wmissing-prototypes]
 ssize_t edp_aux_transfer(struct drm_dp_aux *drm_aux, struct drm_dp_aux_msg *msg)
         ^

the fix is to simply add the missing prototype to drivers/gpu/drm/msm/edp/edp.h

This was compile tested with qcom_defconfig + 
CONFIG_DRM=m (implies CONFIG_DRM_MSM=m)

Patch is against 4.0-rc6 (localversion-next is -next-20150402)

 drivers/gpu/drm/msm/edp/edp.h |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/msm/edp/edp.h b/drivers/gpu/drm/msm/edp/edp.h
index ba5bedd..93d819c 100644
--- a/drivers/gpu/drm/msm/edp/edp.h
+++ b/drivers/gpu/drm/msm/edp/edp.h
@@ -58,6 +58,8 @@ void *msm_edp_aux_init(struct device *dev, void __iomem *regbase,
 void msm_edp_aux_destroy(struct device *dev, struct edp_aux *aux);
 irqreturn_t msm_edp_aux_irq(struct edp_aux *aux, u32 isr);
 void msm_edp_aux_ctrl(struct edp_aux *aux, int enable);
+ssize_t edp_aux_transfer(struct drm_dp_aux *drm_aux,
+			 struct drm_dp_aux_msg *msg);
 
 /* Phy */
 bool msm_edp_phy_ready(struct edp_phy *phy);
-- 
1.7.10.4

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