meta-qti-ssdk: support SSDK shell compilation on sdx55

Change-Id: I6882d65784a576cf5259064d4b9361b9a9107c3e
Signed-off-by: crao <crao@codeaurora.org>

recipes/qca-ssdk-shell/qca-ssdk-shell.bb

@@ -7,7 +7,7 @@ FILESEXTRAPATHS_prepend := "${THISDIR}/files/:"
 SRC_URI = "file://qcom-opensource/qca-ssdk-shell/"
 
 CFLAGS +="--sysroot=${STAGING_DIR_TARGET}"
-CFLAGS +="-mfloat-abi=hard"
+CFLAGS +="-mfpu=neon -mfloat-abi=hard"
 
 INSANE_SKIP_${PN} += "already-stripped"