target/arm: Fix coding style issues in gdbstub code in helper.c

We're going to move this code to a different file; fix the coding
style first so checkpatch doesn't complain.  This includes deleting
the spurious 'break' statements after returns in the
vfp_gdb_get_reg() function.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210921162901.17508-3-peter.maydell@linaro.org

target/arm/helper.c

@@ -72,9 +72,12 @@ static int vfp_gdb_get_reg(CPUARMState *env, GByteArray *buf, int reg)
         }
     }
     switch (reg - nregs) {
-    case 0: return gdb_get_reg32(buf, env->vfp.xregs[ARM_VFP_FPSID]); break;
-    case 1: return gdb_get_reg32(buf, vfp_get_fpscr(env)); break;
-    case 2: return gdb_get_reg32(buf, env->vfp.xregs[ARM_VFP_FPEXC]); break;
+    case 0:
+        return gdb_get_reg32(buf, env->vfp.xregs[ARM_VFP_FPSID]);
+    case 1:
+        return gdb_get_reg32(buf, vfp_get_fpscr(env));
+    case 2:
+        return gdb_get_reg32(buf, env->vfp.xregs[ARM_VFP_FPEXC]);
     }
     return 0;
 }
@@ -98,9 +101,15 @@ static int vfp_gdb_set_reg(CPUARMState *env, uint8_t *buf, int reg)
         }
     }
     switch (reg - nregs) {
-    case 0: env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf); return 4;
-    case 1: vfp_set_fpscr(env, ldl_p(buf)); return 4;
-    case 2: env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30); return 4;
+    case 0:
+        env->vfp.xregs[ARM_VFP_FPSID] = ldl_p(buf);
+        return 4;
+    case 1:
+        vfp_set_fpscr(env, ldl_p(buf));
+        return 4;
+    case 2:
+        env->vfp.xregs[ARM_VFP_FPEXC] = ldl_p(buf) & (1 << 30);
+        return 4;
     }
     return 0;
 }
@@ -119,7 +128,7 @@ static int aarch64_fpu_gdb_get_reg(CPUARMState *env, GByteArray *buf, int reg)
         return gdb_get_reg32(buf, vfp_get_fpsr(env));
     case 33:
         /* FPCR */
-        return gdb_get_reg32(buf,vfp_get_fpcr(env));
+        return gdb_get_reg32(buf, vfp_get_fpcr(env));
     default:
         return 0;
     }