tcg: Standardize on TCGReg as the enum for hard registers

Most targets did not name the enum; tci used TCGRegister.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/tcg/mips/tcg-target.h b/tcg/mips/tcg-target.h
index e2a2571..477bc38 100644
--- a/tcg/mips/tcg-target.h
+++ b/tcg/mips/tcg-target.h
@@ -31,7 +31,7 @@
 
 #define TCG_TARGET_NB_REGS 32
 
-enum {
+typedef enum {
     TCG_REG_ZERO = 0,
     TCG_REG_AT,
     TCG_REG_V0,
@@ -64,7 +64,7 @@
     TCG_REG_SP,
     TCG_REG_FP,
     TCG_REG_RA,
-};
+} TCGReg;
 
 #define TCG_CT_CONST_ZERO 0x100
 #define TCG_CT_CONST_U16  0x200