cmake: log ${CMAKE_VERSION}

[marc-hb]

Different CMake versions can have very subtle differences, for instance CMake 3.21 links object files in a different order compared to CMake 3.20; this produces different binaries.

CMAKE_VERSION is required information to track binary differences between two build systems.

Signed-off-by: Marc Herbert [email protected]

[marc-hb]

Sample output:

-- west build: generating a build system
Loading Zephyr default modules (Zephyr base).
-- Application: /home/me/SOF/sof/app
-- CMake version: 3.25.1
-- Found Python3: /usr/bin/python3.10 (found suitable exact version "3.10.8") found components: Interpreter 
-- Cache files will be written to: /home/me/.cache/zephyr
-- Zephyr version: 3.2.99 (/home/me/SOF/zephyr)
-- Found west (found suitable version "0.14.0", minimum required is "0.7.1")
-- Board: intel_adsp_cavs25
-- Found toolchain: xcc (/home/me/XCC/install/tools)
-- Found Dtc: /usr/bin/dtc (found suitable version "1.6.1", minimum required is "1.4.6")