hal: Update configure.ac for sdmsteppe target

Add check for sdmsteppe target to select platform file
during compilation.

Change-Id: I3586e9de860c05c96aec7b4aedb8faf11a80637c
Signed-off-by: Md Mansoor Ahmed <mansoor@codeaurora.org>
diff --git a/configure.ac b/configure.ac
old mode 100644
new mode 100755
index ef90749..60e51eb
--- a/configure.ac
+++ b/configure.ac
@@ -89,7 +89,10 @@
          AC_SUBST([TARGET_PLATFORM], ["msm8974"])
          TARGET_CFLAGS=" -DPLATFORM_QCS405"
 fi
-
+if (test x$TARGET_SUPPORT = xsdmsteppe); then
+         AC_SUBST([TARGET_PLATFORM], ["msm8974"])
+         TARGET_CFLAGS="-DPLATFORM_MSMSTEPPE"
+fi
 AC_SUBST([TARGET_CFLAGS])
 
 AM_CONDITIONAL([QTI_AUDIO_SERVER_ENABLED],[test x$BOARD_SUPPORTS_QTI_AUDIO_SERVER = xtrue])