[MIPS] WRPPMC: Fix build.

Using another systems defines is a safe way to get your code broken by
accident when that system is removed.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

arch/mips/gt64120/wrppmc/setup.c

@@ -158,8 +158,8 @@ const char *get_system_type(void)
  */
 void __init prom_init(void)
 {
-	mips_machgroup = MACH_GROUP_GALILEO;
-	mips_machtype = MACH_EV64120A;
+	mips_machgroup = MACH_GROUP_WINDRIVER;
+	mips_machtype = MACH_WRPPMC;
 
 	add_memory_region(WRPPMC_SDRAM_SCS0_BASE, WRPPMC_SDRAM_SCS0_SIZE, BOOT_MEM_RAM);
 	add_memory_region(WRPPMC_BOOTROM_BASE, WRPPMC_BOOTROM_SIZE, BOOT_MEM_ROM_DATA);

include/asm-mips/bootinfo.h

@@ -218,6 +218,9 @@
 #define MACH_MSP7120_FPGA       5	/* PMC-Sierra MSP7120 Emulation */
 #define MACH_MSP_OTHER        255	/* PMC-Sierra unknown board type */
 
+#define MACH_GROUP_WINDRIVER   28	/* Windriver boards */
+#define MACH_WRPPMC             1
+
 #define CL_SIZE			COMMAND_LINE_SIZE
 
 const char *get_system_type(void);