mk: fix link to static combined library
mk: fix link to static combined library

When building static archives with CONFIG_COMBINED_LIBS, we still need to
specify --whole-archive to pull in all the proper constructors.

Signed-off-by: Neil Horman <3316dc2d77df57653443c0391a5296176d6ca9c3@tuxdriver.com>
Reported-by: Lyn M <a3b3a2df8aeaac0fabe98ecf52a1efcf4f76c9f3@gmail.com>
Tested-by: Lyn M <a3b3a2df8aeaac0fabe98ecf52a1efcf4f76c9f3@gmail.com>
Acked-by: Thomas Monjalon <ee2fa8b2681c737f775687e475dcbf2028a412f1@6wind.com>

phermansson/dpdk,phermansson/dpdk,phermansson/dpdk,phermansson/dpdk