intel_reg: Renamed INST_DONE to INSTDONE

That's how the registers are named in the kernel defines.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
diff --git a/tools/intel_error_decode.c b/tools/intel_error_decode.c
index 529ec54..ac0b194 100644
--- a/tools/intel_error_decode.c
+++ b/tools/intel_error_decode.c
@@ -102,7 +102,7 @@
 	for (i = 0; i < num_instdone_bits; i++) {
 		int busy = 0;
 
-		if (instdone_bits[i].reg == INST_DONE_1) {
+		if (instdone_bits[i].reg == INSTDONE_1) {
 			if (!(instdone1 & instdone_bits[i].bit))
 				busy = 1;
 		} else {