DM USB: involve the libusb

This patch involves the libusb to communicate with the SOS USB kernel
stack, and the README.rst is also updated for this purpose.

The libusb is under GNU Lesser General Public License version 2.1.

Change-Id: Ieecd08f41993162115e8e588980b81b769c89a37
Signed-off-by: Wu, Xiaoguang <xiaoguang.wu@intel.com>
Reviewed-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Yu Wang <yu1.wang@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

devicemodel/Makefile

@@ -48,6 +48,7 @@ LIBS += -lcrypto
 LIBS += -lpciaccess
 LIBS += -lz
 LIBS += -luuid
+LIBS += -lusb-1.0
 
 # hw
 SRCS += hw/block_if.c

devicemodel/README.rst

@@ -26,7 +26,8 @@ Build dependencies
    sudo yum install gcc \
           libuuid-devel \
           openssl-devel \
-          libpciaccess-devel
+          libpciaccess-devel \
+          libusb-devel
 
 * For Fedora 27
 
@@ -35,7 +36,8 @@ Build dependencies
    sudo dnf install gcc \
           libuuid-devel \
           openssl-devel \
-          libpciaccess-devel
+          libpciaccess-devel \
+          libusb-devel
 
 Build
 *****
@@ -61,7 +63,8 @@ Runtime dependencies
    sudo yum install openssl-libs \
                     zlib \
                     libpciaccess \
-                    libuuid
+                    libuuid \
+                    libusb
 
 * On Fedora 27
 
@@ -70,7 +73,8 @@ Runtime dependencies
    sudo dnf install openssl-libs \
                     zlib \
                     libpciaccess \
-                    libuuid
+                    libuuid \
+                    libusb
 
 .. _`ACRN Hypervisor`: https://github.com/projectacrn/acrn-hypervisor
 .. _`Project ACRN documentation`: https://projectacrn.github.io/