visium MAX_MEM_FOR_RS_ALIGN_CODE

Commit 7ca6020a4e52 "tidy target HANDLE_ALIGN" didn't account for
the "fix" amount emitted by visium_handle_align.  This didn't show up
as a problem due to frag alignment hiding the error, until I started
messing with struct frag.

	* config/tc-visium.h (MAX_MEM_FOR_RS_ALIGN_CODE): Correct.