Fix libpldm includes in the responder

The header files from libpldm are installed in
libpldm/<.h> pattern, so fixing the header includes to
have folder name prepended.

Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: I0c1c326b3bac4e328d679253c60ac69f2082041e
diff --git a/libpldmresponder/platform.hpp b/libpldmresponder/platform.hpp
index 13ea461..bf64f6b 100644
--- a/libpldmresponder/platform.hpp
+++ b/libpldmresponder/platform.hpp
@@ -2,9 +2,9 @@
 
 #include "config.h"
 
+#include "libpldm/pdr.h"
 #include "libpldm/platform.h"
 #include "libpldm/states.h"
-#include "pdr.h"
 
 #include "common/utils.hpp"
 #include "event_parser.hpp"