ac/surface: allow linear swizzle mode automatic selection on gfx9 & 10

let addrlib make the decision to get the same result as PAL.

src/amd/common/ac_surface.c

@@ -982,7 +982,6 @@ gfx9_get_preferred_swizzle_mode(ADDR_HANDLE addrlib,
 	/* TODO: We could allow some of these: */
 	sin.forbiddenBlock.micro = 1; /* don't allow the 256B swizzle modes */
 	sin.forbiddenBlock.var = 1; /* don't allow the variable-sized swizzle modes */
-	sin.forbiddenBlock.linear = 1; /* don't allow linear swizzle modes */
 	sin.bpp = in->bpp;
 	sin.width = in->width;
 	sin.height = in->height;