SH7750/51: add register BCR3, BCR4, PCR, RTCOR, RTCNT, RTCSR, SDMR2, SDMR3 and fix BCR2 support

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6548 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/target-sh4/cpu.h b/target-sh4/cpu.h
index 623eacc..86a4a6b 100644
--- a/target-sh4/cpu.h
+++ b/target-sh4/cpu.h
@@ -95,6 +95,7 @@
 
 enum sh_features {
     SH_FEATURE_SH4A = 1,
+    SH_FEATURE_BCR3_AND_BCR4 = 2,
 };
 
 typedef struct CPUSH4State {