CMakeLists.txt: Fix linker command in generated .pc file
CMakeLists.txt: Fix linker command in generated .pc file

Signed-off-by: Andrew Andrianov <02e0a999c50b1f88df7a8f5a04e1b76b35ea6a88@ncrmnt.org>

simonjwright/stlink,gtalusan/stlink,gtalusan/stlink,simonjwright/stlink