Updated amdsmi header for ESMI doxygen formatting

Referencing htttps://github.com/ROCm/amdsmi/pull/10

Change-Id: I516e3643130db8a4213aee7dfcaca27363e3171e
Signed-off-by: Maisam Arif <maisarif@amd.com>

docs/doxygen/Doxyfile

@@ -2276,7 +2276,7 @@ INCLUDE_FILE_PATTERNS  =
 # recursively expanded use the := operator instead of the = operator.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-PREDEFINED             =
+PREDEFINED             = ENABLE_ESMI_LIB
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
 # tag can be used to specify a list of macro names that should be expanded. The