openssl: fix and enable parallel build

Fixed:
Cannot create directory image/usr: File exists
make: *** [install_sw] Error 17

Create /usr to avoid race issues.

(From OE-Core rev: a831cbe6cce67396148b41d56cbc12f99a972bd1)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/openssl/openssl.inc

@@ -155,6 +155,9 @@ do_compile_ptest () {
 }
 
 do_install () {
+	# Create ${D}/${prefix} to fix parallel issues
+	mkdir -p ${D}/${prefix}/
+
 	oe_runmake INSTALL_PREFIX="${D}" MANDIR="${mandir}" install
 
 	oe_libinstall -so libcrypto ${D}${libdir}

meta/recipes-connectivity/openssl/openssl_1.0.1j.bb

@@ -49,9 +49,6 @@ PACKAGES =+ " \
 FILES_${PN}-engines = "${libdir}/ssl/engines/*.so ${libdir}/engines"
 FILES_${PN}-engines-dbg = "${libdir}/ssl/engines/.debug"
 
-PARALLEL_MAKE = ""
-PARALLEL_MAKEINST = ""
-
 do_configure_prepend() {
   cp ${WORKDIR}/find.pl ${S}/util/find.pl
 }