target: Support display panel detection API

It adds the display panel API to pass the panel id through command
line argument

Change-Id: I4c36582620c88c1a4b96e504001f07e4f7c6d1e1
diff --git a/include/target.h b/include/target.h
index dc86864..45f1605 100644
--- a/include/target.h
+++ b/include/target.h
@@ -50,5 +50,6 @@
 bool target_is_ssd_enabled(void);
 struct mmc_device *target_mmc_device();
 
+bool target_display_panel_node(char *pbuf, uint16_t buf_size);
 
 #endif
diff --git a/target/init.c b/target/init.c
index a2c1d93..57181d4 100644
--- a/target/init.c
+++ b/target/init.c
@@ -140,3 +140,8 @@
 __WEAK void target_uninit(void)
 {
 }
+
+__WEAK bool target_display_panel_node(char *pbuf, uint16_t buf_size)
+{
+	return false;
+}