target/ppc: Fix typo in comments

"Deferred" was misspelled as "differed" in some comments, correct this
typo,
Signed-off-by: NBALATON Zoltan <balaton@eik.bme.hu>
Message-Id: <20200214155748.0896B745953@zero.eik.bme.hu>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

target/ppc/fpu_helper.c

@@ -293,7 +293,7 @@ static void float_invalid_op_vxvc(CPUPPCState *env, bool set_fpcc,
         env->error_code = POWERPC_EXCP_FP | POWERPC_EXCP_FP_VXVC;
         /* Update the floating-point enabled exception summary */
         env->fpscr |= FP_FEX;
-        /* Exception is differed */
+        /* Exception is deferred */
     }
 }
 
@@ -644,7 +644,7 @@ static void do_float_check_status(CPUPPCState *env, uintptr_t raddr)
 
     if (cs->exception_index == POWERPC_EXCP_PROGRAM &&
         (env->error_code & POWERPC_EXCP_FP)) {
-        /* Differred floating-point exception after target FPR update */
+        /* Deferred floating-point exception after target FPR update */
         if (fp_exceptions_enabled(env)) {
             raise_exception_err_ra(env, cs->exception_index,
                                    env->error_code, raddr);

target/ppc/translate/fp-impl.inc.c

@@ -781,7 +781,7 @@ static void gen_mtfsb1(DisasContext *ctx)
         tcg_gen_trunc_tl_i32(cpu_crf[1], cpu_fpscr);
         tcg_gen_shri_i32(cpu_crf[1], cpu_crf[1], FPSCR_OX);
     }
-    /* We can raise a differed exception */
+    /* We can raise a deferred exception */
     gen_helper_float_check_status(cpu_env);
 }
 
@@ -817,7 +817,7 @@ static void gen_mtfsf(DisasContext *ctx)
         tcg_gen_trunc_tl_i32(cpu_crf[1], cpu_fpscr);
         tcg_gen_shri_i32(cpu_crf[1], cpu_crf[1], FPSCR_OX);
     }
-    /* We can raise a differed exception */
+    /* We can raise a deferred exception */
     gen_helper_float_check_status(cpu_env);
     tcg_temp_free_i64(t1);
 }
@@ -850,7 +850,7 @@ static void gen_mtfsfi(DisasContext *ctx)
         tcg_gen_trunc_tl_i32(cpu_crf[1], cpu_fpscr);
         tcg_gen_shri_i32(cpu_crf[1], cpu_crf[1], FPSCR_OX);
     }
-    /* We can raise a differed exception */
+    /* We can raise a deferred exception */
     gen_helper_float_check_status(cpu_env);
 }