sh: add probe support for new sh7723 cut

This patch adds support for sh7723 silicon with a prr value of 0x51.
Signed-off-by: NMagnus Damm <damm@igel.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/kernel/cpu/sh4/probe.c

@@ -132,6 +132,7 @@ int __init detect_cpu_and_cache_system(void)
 
 		switch (prr) {
 		case 0x50:
+		case 0x51:
 			boot_cpu_data.type = CPU_SH7723;
 			boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_L2_CACHE;
 			break;