fix CentOS compilation

The following was not working properly:

    ./build_oai -I -w USRP

After this commit it works.

And so does:

  ./build_oai --eNB -w USRP

cmake_targets/tools/build_helper

@@ -249,14 +249,14 @@ install_usrp_uhd_driver_from_source(){
     cd /tmp
     echo "Downloading UHD driver"
     rm -rf /tmp/uhd
-    git clone git://github.com/EttusResearch/uhd.git
+    git clone https://github.com/EttusResearch/uhd.git
     cd uhd
     git checkout tags/release_003_010_001_001
     mkdir -p host/build
     cd host/build
     $CMAKE ../
     echo "Compiling UHD"
-    make
+    make -j`nproc`
     make test
     $SUDO make install
     $SUDO ldconfig
@@ -277,10 +277,11 @@ check_install_usrp_uhd_driver(){
         $SUDO apt-get -y --allow-unauthenticated install libuhd-dev libuhd003 uhd-host
     elif [[ "$OS_BASEDISTRO" == "fedora" ]]; then
         $SUDO $INSTALLER -y install python boost libusb-devel libusbx-devel boost-devel python-mako python-docutils cmake
+        $SUDO pip install requests
         if [[ "$OS_DISTRO" == "rhel" ]] || [[ "$OS_DISTRO" == "centos" ]]; then
             # until EPEL repo hasn't bumped UHD driver to >=3.10 in EPEL, build driver from source
             $SUDO $INSTALLER -y remove uhd uhd-devel uhd-firmware
-            install_ursp_uhd_driver_from_source
+            install_usrp_uhd_driver_from_source
         else
             $SUDO $INSTALLER -y install uhd uhd-devel uhd-firmware
         fi
@@ -644,7 +645,8 @@ check_install_oai_software() {
       lapack \
       lapack-devel \
       blas \
-      blas-devel
+      blas-devel \
+      libyaml-devel
   fi
 
     install_asn1c_from_source