eclair/analyze_index_html.sh: Fix shell var assignment syntax

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I7709300da9c4de0f072ef4a9c74adb7eec9abb6e
diff --git a/eclair/analyze_index_html.sh b/eclair/analyze_index_html.sh
index a149046..c1a5795 100755
--- a/eclair/analyze_index_html.sh
+++ b/eclair/analyze_index_html.sh
@@ -7,7 +7,7 @@
 # Template to produce index.html for the "full" build.
 
 if [ -n "${TF_CONFIG}" ]; then
-    build_config = "TF-A Config: ${TF_CONFIG}<br />"
+    build_config="TF-A Config: ${TF_CONFIG}<br />"
 fi
 
 cat <<EOF >index.html