UNIF: Update boards based on last commit

- fixes (if necessary), update and cleanup the following boards that now dont need alternate mappings:
- this is part of migrating unif to be usuable in ines mappers
- boards affected in this commit are:
  SUPERVISION16IN1, GS-2004, GS-2013, UNL-SMB2J, MARIO1-MALEE2, UNL-SA-9602B, UNL-KS106C / RESETNROM-XIN1
  UNL-AC08, NES-NTBROM, BMC-K-3033, BMC-GN-26, BMC-GHOSTBUSTERS63IN1, BMC-830425C-4391T
  BMC-830134C, BMC-891227 / BMC-CTC-12IN1, BMC-JC-016-2, UNL-T4A54A, UNL-8157, BMC-T-262
  (might have forgotten to list some...)

src/boards/gn26.c

@@ -27,19 +27,20 @@
 #include "mmc3.h"
 
 static void BMCGN26CW(uint32 A, uint8 V) {
-	uint32 chip = (EXPREGS[0] & 0x03);
-	if (chip) chip -= 1;
-	setchr1r(chip, A, (V & 0xFF));
+	uint32 base = (EXPREGS[0] & 0x03) << 7;
+	setchr1(A, base | (V & 0xFF));
 }
 
 static void BMCGN26PW(uint32 A, uint8 V) {
-	uint32 chip = (EXPREGS[0] & 0x03);
-	if (chip) chip -= 1; /* Re-ordered -> 0:SF4 1:Contra Force 2:Revolution Hero */
+	/* Re-ordered -> 0:SF4 1:Contra Force 2:Revolution Hero */
+	uint32 table[] = { 0, 0, 1, 2 };
+	uint32 base = table[(EXPREGS[0] & 0x03)];
+
 	if (EXPREGS[0] & 4) {
 		if (A == 0x8000)
-			setprg32r(chip, 0x8000, (V >> 2));
+			setprg32(0x8000, (base << 2) | (V >> 2));
 	} else
-		setprg8r(chip, A, (V & 0x0F));
+		setprg8(A, (base << 4) | (V & 0x0F));
 }
 
 static DECLFW(BMCGN26Write) {