project: msm8952: Add a flag to introduce delay in the SDHCI HS200 tuning process.

MSM8952 SDHCI requires delay in the HS200 tuning process.
Add a flag to enable this.

Change-Id: I0004acb5b3a7314fa20cc6fa14f67ba2637b9afc
diff --git a/project/msm8952.mk b/project/msm8952.mk
index b20e243..c0484d0 100644
--- a/project/msm8952.mk
+++ b/project/msm8952.mk
@@ -60,3 +60,5 @@
 DEFINES += PLATFORM_USE_SCM_DLOAD=1
 
 CFLAGS += -Werror
+
+DEFINES += USE_TARGET_HS200_DELAY=1