MIPS: Add generic QEMU PRid and cpu type identifiers

Latest versions of QEMU added support for mips32r6-generic and
mips64r6-generic cpu types so add related definitions in preparation
of MIPS R6 support. This is also used for QEMU R2 generic cpus.
Signed-off-by: NLeonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: NMarkos Chandras <markos.chandras@imgtec.com>

arch/mips/include/asm/cpu.h

@@ -93,6 +93,7 @@
  * These are the PRID's for when 23:16 == PRID_COMP_MIPS
  */
 
+#define PRID_IMP_QEMU_GENERIC	0x0000
 #define PRID_IMP_4KC		0x8000
 #define PRID_IMP_5KC		0x8100
 #define PRID_IMP_20KC		0x8200
@@ -312,6 +313,8 @@ enum cpu_type_enum {
 	CPU_LOONGSON3, CPU_CAVIUM_OCTEON, CPU_CAVIUM_OCTEON_PLUS,
 	CPU_CAVIUM_OCTEON2, CPU_CAVIUM_OCTEON3, CPU_XLR, CPU_XLP,
 
+	CPU_QEMU_GENERIC,
+
 	CPU_LAST
 };