When using variadic macros there's no need for IF_MD2/IF_MV2 to deal with function parameters. IF_MD/IF_MV are enough. Throw in IF_MD_DRV/ID_MV_VOL that return the parameter if MD/MV, or 0 if not. Change-Id: I7605e6039f3be19cb47110c84dcb3c5516f2c3eb
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@30449 a1c6a512-1295-4272-9138-f99709370657
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29935 a1c6a512-1295-4272-9138-f99709370657