Merge pull request #226 from sagar-apple/fix_EFR32_build

Fix EFR32 DeviceLayer build

Author: woody-apple

src/lib/support/Makefile.am

@@ -33,6 +33,7 @@ lib_LIBRARIES                       = libSupportLayer.a
 libSupportLayer_a_CPPFLAGS          = \
     -I$(top_srcdir)/src               \
     -I$(top_srcdir)/src/lib           \
+    -I$(top_srcdir)/src/include       \
     $(NULL)
 
 libSupportLayer_a_SOURCES           = $(CHIP_BUILD_SUPPORT_LAYER_SOURCE_FILES)