platform: msm8953: add function to detect platform

Add function to detect msm8953 platform.

Change-Id: I04797e619a8405ca23a8c417761a42110030e77e
diff --git a/include/platform.h b/include/platform.h
index 6711836..f3f970b 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -69,6 +69,7 @@
 int platform_is_msmgold();
 uint32_t platform_get_apcs_ipc_base();
 int platform_is_msm8952();
+int platform_is_msm8953();
 int platform_is_msm8956();
 uint32_t platform_is_msm8976_v_1_1();
 uint32_t platform_get_tz_app_add();