MIPS: Unify Loongson1 PRID_REV

LS1B and LS1C share the same PRID value, so unify them
into a single definition: PRID_REV_LOONGSON1.

Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Signed-off-by: Keguang Zhang <[email protected]>
Signed-off-by: Thomas Bogendoerfer <[email protected]>

Author: kelvincheung

arch/mips/include/asm/cpu.h

@@ -248,8 +248,7 @@
 #define PRID_REV_VR4181A		0x0070	/* Same as VR4122 */
 #define PRID_REV_VR4130			0x0080
 #define PRID_REV_34K_V1_0_2		0x0022
-#define PRID_REV_LOONGSON1B		0x0020
-#define PRID_REV_LOONGSON1C		0x0020	/* Same as Loongson-1B */
+#define PRID_REV_LOONGSON1		0x0020
 #define PRID_REV_LOONGSON2E		0x0002
 #define PRID_REV_LOONGSON2F		0x0003
 #define PRID_REV_LOONGSON2K_R1_0	0x0000

arch/mips/kernel/cpu-probe.c

@@ -1288,14 +1288,14 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
 		set_cpu_asid_mask(c, MIPS_ENTRYHI_ASID);
 		c->writecombine = _CACHE_UNCACHED_ACCELERATED;
 		break;
-	case PRID_IMP_LOONGSON_32:  /* Loongson-1 */
+	case PRID_IMP_LOONGSON_32:
 		decode_configs(c);
 
 		c->cputype = CPU_LOONGSON32;
 
 		switch (c->processor_id & PRID_REV_MASK) {
-		case PRID_REV_LOONGSON1B:
-			__cpu_name[cpu] = "Loongson 1B";
+		case PRID_REV_LOONGSON1:
+			__cpu_name[cpu] = "ICT Loongson-1";
 			break;
 		}