nouveau/mme: fix print inst for case MME_FERMI_OP_MERGE
By applying the same coding style of the other case statements,
this patch fixes the following building errors:
../src/nouveau/mme/mme_fermi.c:209:10: error: expected expression
uint32_t src_bit = inst->bitfield.src_bit;
^
../src/nouveau/mme/mme_fermi.c:216:39: error: use of undeclared identifier 'src_bit'; did you mean 'dst_bit'?
fprintf(fp, " (%u, %u, %u)", src_bit, size, dst_bit);
^~~~~~~
dst_bit
../src/nouveau/mme/mme_fermi.c:211:19: note: 'dst_bit' declared here
uint32_t dst_bit = inst->bitfield.dst_bit;
^
2 errors generated.