msm: dsi_panel: refresh rate config option

TP:
Need to enforce CONFIG_DRM_DYNAMIC_REFRESH_RATE option within techpak
for racer.

Change-Id: I05b9749a138407d9eb627040f65d7e29588b226f
Signed-off-by: haojl2 <haojl2@motorola.com>
Reviewed-on: https://gerrit.mot.com/1475865
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Jichao Zou <zoujc@motorola.com>
Submit-Approved: Jira Key
Reviewed-on: https://gerrit.mot.com/1509830
Reviewed-by: Hua Tan <tanhua1@motorola.com>

config/saipdisp.conf

@@ -11,3 +11,4 @@ export CONFIG_QCOM_MDSS_PLL=y
 export CONFIG_MSM_SDE_ROTATOR=y
 export CONFIG_MSM_SDE_ROTATOR_EVTLOG_DEBUG=y
 export CONFIG_DRM_SDE_RSC=y
+export CONFIG_DRM_DYNAMIC_REFRESH_RATE=y

config/saipdispconf.h

@@ -17,3 +17,4 @@
 #define CONFIG_MSM_SDE_ROTATOR 1
 #define CONFIG_MSM_SDE_ROTATOR_EVTLOG_DEBUG 1
 #define CONFIG_DRM_SDE_RSC 1
+#define CONFIG_DRM_DYNAMIC_REFRESH_RATE 1