target/sh4: fix some comment spelling errors

There are many spelling errors in the comments of target/sh4.
Use spellcheck to check the spelling errors, then fix them.

Signed-off-by: zhaolichang <zhaolichang@huawei.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Philippe Mathieu-Daude<f4bug@amsat.org>
Message-Id: <20201009064449.2336-10-zhaolichang@huawei.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

target/sh4/cpu.h

@@ -160,7 +160,7 @@ typedef struct CPUSH4State {
     uint32_t pteh;		/* page table entry high register */
     uint32_t ptel;		/* page table entry low register */
     uint32_t ptea;		/* page table entry assistance register */
-    uint32_t ttb;		/* tranlation table base register */
+    uint32_t ttb;               /* translation table base register */
     uint32_t tea;		/* TLB exception address register */
     uint32_t tra;		/* TRAPA exception register */
     uint32_t expevt;		/* exception event register */

target/sh4/op_helper.c

@@ -401,7 +401,7 @@ float32 helper_fsrra_FT(CPUSH4State *env, float32 t0)
     /*
      * Since this is supposed to be an approximation, an imprecision
      * exception is required.  One supposes this also follows the usual
-     * IEEE rule that other exceptions take precidence.
+     * IEEE rule that other exceptions take precedence.
      */
     if (get_float_exception_flags(&env->fp_status) == 0) {
         set_float_exception_flags(float_flag_inexact, &env->fp_status);

target/sh4/translate.c

@@ -1960,7 +1960,7 @@ static void decode_gusa(DisasContext *ctx, CPUSH4State *env)
     switch (ctx->opcode & 0xf00f) {
     case 0x6003: /* mov Rm,Rn */
         /*
-         * Here we want to recognize ld_dst being saved for later consumtion,
+         * Here we want to recognize ld_dst being saved for later consumption,
          * or for another input register being copied so that ld_dst need not
          * be clobbered during the operation.
          */