cmake: linker: ld: Use "-Map <mapfile>" for legacy compatibility

The build system currently generates mapfiles by invoking ld with the
"-Map=<mapfile>" command line argument. This variant of the flag was
introduced in GNU binutils 2.20.

To enable compatibility with legacy versions of the GNU ld, the argument
has been replaced with the "-Map <mapfile>" variant.

Signed-off-by: Joel Holdsworth <jholdsworth@nvidia.com>

Author: jhol

cmake/linker/ld/target.cmake

@@ -129,7 +129,7 @@ function(toolchain_ld_link_elf)
     ${TOOLCHAIN_LD_LINK_ELF_LINKER_SCRIPT}
     ${TOOLCHAIN_LD_LINK_ELF_LIBRARIES_POST_SCRIPT}
 
-    ${LINKERFLAGPREFIX},-Map=${TOOLCHAIN_LD_LINK_ELF_OUTPUT_MAP}
+    ${LINKERFLAGPREFIX},-Map,${TOOLCHAIN_LD_LINK_ELF_OUTPUT_MAP}
     ${LINKERFLAGPREFIX},--whole-archive
     ${WHOLE_ARCHIVE_LIBS}
     ${LINKERFLAGPREFIX},--no-whole-archive