dynasm: Fix integer binary op codegen
dynasm: Fix integer binary op codegen

Integer arithmetic is 32-bit so use the appropriate sized registers.

Signed-off-by: Pekka Enberg <add4fcd06328a394f0ad91feda7ee057316dc5ed@kernel.org>

penberg/hornet,penberg/hornet,penberg/hornet,penberg/hornet