r600g: take into account kcache banks for bank swizzle check

r600g: take into account kcache banks for bank swizzle check

Due to the changes for multiple kcache banks support, now we are assigning
final SRCx_SEL values for kcache access at the later stage, when building the
bytecode. So we need to take into account kcache banks to distinguish
the constants with the same address but different bank index.

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>