target-xtensa: Clean up ENV_GET_CPU() usage

Commits a00817cc and
fdfba1a2 added usages of ENV_GET_CPU()
macro in target-specific code.

Use xtensa_env_get_cpu() instead.

Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

target-xtensa/cpu.h

@@ -493,6 +493,8 @@ static inline int cpu_mmu_index(CPUXtensaState *env)
 static inline void cpu_get_tb_cpu_state(CPUXtensaState *env, target_ulong *pc,
         target_ulong *cs_base, int *flags)
 {
+    CPUState *cs = CPU(xtensa_env_get_cpu(env));
+
     *pc = env->pc;
     *cs_base = 0;
     *flags = 0;
@@ -515,7 +517,7 @@ static inline void cpu_get_tb_cpu_state(CPUXtensaState *env, target_ulong *pc,
     if (xtensa_option_enabled(env->config, XTENSA_OPTION_COPROCESSOR)) {
         *flags |= env->sregs[CPENABLE] << XTENSA_TBFLAG_CPENABLE_SHIFT;
     }
-    if (ENV_GET_CPU(env)->singlestep_enabled && env->exception_taken) {
+    if (cs->singlestep_enabled && env->exception_taken) {
         *flags |= XTENSA_TBFLAG_EXCEPTION;
     }
 }

target-xtensa/helper.c

@@ -552,7 +552,7 @@ static int get_physical_addr_mmu(CPUXtensaState *env, bool update_tlb,
 
 static int get_pte(CPUXtensaState *env, uint32_t vaddr, uint32_t *pte)
 {
-    CPUState *cs = ENV_GET_CPU(env);
+    CPUState *cs = CPU(xtensa_env_get_cpu(env));
     uint32_t paddr;
     uint32_t page_size;
     unsigned access;