build-setup.sh: fix bitbake warnings

Resolved the warning messages encountered during the docker build

WARNING: local.conf:263 has a lack of whitespace around the
assignment: 'DL_DIR="/data0/jenkins/bitbake_downloads"'

WARNING: local.conf:264 has a lack of whitespace around the
assignment: 'SSTATE_DIR="/data0/jenkins/bitbake_sharedstatecache"'

WARNING: local.conf:267 has a lack of whitespace around
the assignment: 'TMPDIR="/data0/jenkins/workspace/latest-master/
label/docker-builder/target/bletchley/build"'

Change-Id: I1596bc0251f3d5b06c24069377313320c973eb7b
Signed-off-by: Hariharan Rangasamy <hariharanr@ami.com>
diff --git a/build-setup.sh b/build-setup.sh
index 7830819..a6a3609 100755
--- a/build-setup.sh
+++ b/build-setup.sh
@@ -355,11 +355,11 @@
 PARALLEL_MAKE = "-j$num_cpu"
 INHERIT += "rm_work"
 BB_GENERATE_MIRROR_TARBALLS = "1"
-DL_DIR="${ssc_dir}/bitbake_downloads"
-SSTATE_DIR="${ssc_dir}/bitbake_sharedstatecache"
+DL_DIR = "${ssc_dir}/bitbake_downloads"
+SSTATE_DIR = "${ssc_dir}/bitbake_sharedstatecache"
 USER_CLASSES += "buildstats"
 INHERIT:remove = "uninative"
-TMPDIR="${build_dir}"
+TMPDIR = "${build_dir}"
 ${ENV_LOCAL_CONF}
 EOF_CONF