accel/tcg: Introduce translator_fake_ld

Replace translator_fake_ldb, which required multiple calls,
with translator_fake_ld, which can take all data at once.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

include/exec/translator.h

@@ -234,17 +234,17 @@ translator_ldq_swap(CPUArchState *env, DisasContextBase *db,
 }
 
 /**
- * translator_fake_ldb - fake instruction load
+ * translator_fake_ld - fake instruction load
  * @db: Disassembly context
- * @pc: program counter of instruction
- * @insn8: byte of instruction
+ * @data: bytes of instruction
+ * @len: number of bytes
  *
  * This is a special case helper used where the instruction we are
  * about to translate comes from somewhere else (e.g. being
  * re-synthesised for s390x "ex"). It ensures we update other areas of
  * the translator with details of the executed instruction.
  */
-void translator_fake_ldb(DisasContextBase *db, vaddr pc, uint8_t insn8);
+void translator_fake_ld(DisasContextBase *db, const void *data, size_t len);
 
 /**
  * translator_st