R600: Fix typo in R600Schedule.td

This should only make a difference in programs that use a lot of the
vector ALU instructions like BFI_INT and BIT_ALIGN.  There is a slight
improvement in the phatk bitcoin mining kernel with this patch on
Evergreen (vector size == 1):

Before:
1173 Instruction Groups / 9520 dwords

After:
1167 Instruction Groups / 9510 dwords

Reviewed-by: Reviewed-by: Vincent Lejeune<vljn at ovi.com>
R600/SI: Add support for v4i32 and v4f32 kernel args

Tested-By: Aaron Watry <awatry@gmail.com>
R600: Add support for i32 loads from the constant address space on Cayman

Tested-By: Aaron Watry <awatry@gmail.com>
R600/SI: Report unaligned memory accesses as legal for > 32-bit types

In reality, some unaligned memory accesses are legal for 32-bit types and
smaller too, but it all depends on the address space.  Allowing
unaligned loads/stores for > 32-bit types is mainly to prevent the
legalizer from splitting one load into multiple loads of smaller types.

https://bugs.freedesktop.org/show_bug.cgi?id=65873