powerpc: Fix tlbilx opcode

The tlbilx opcode was not matching the Power ISA 2.06 arch spec.
The old opcode was an early suggested opcode that changed during the
2.06 architecture process.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

arch/powerpc/include/asm/ppc-opcode.h

@@ -43,7 +43,7 @@
 
 #define PPC_INST_STSWI			0x7c0005aa
 #define PPC_INST_STSWX			0x7c00052a
-#define PPC_INST_TLBILX			0x7c000626
+#define PPC_INST_TLBILX			0x7c000024
 #define PPC_INST_WAIT			0x7c00007c
 
 /* macros to insert fields into opcodes */