[SWDEV-516619] Added libdrm-dev dependencies to README (#130)

Signed-off-by: Williams, Justin <Justin.Williams@amd.com>

docs/install/build.md

@@ -18,6 +18,8 @@ versions are not guaranteed to work.
 
 * CMake (v3.14.0 or later) -- `python3 -m pip install cmake`
 * g++ (v5.4.0 or later)
+* libdrm-dev (for Ubuntu and Debian)
+* libdrm-devel (for RPM-based distributions)
 
 In order to build the AMD SMI Python package, the following components are
 required: