S390: Fix incorrect V8_HOST_ARCH_S390X to V8_TARGET_ARCH_S390X

src/s390/code-stubs-s390.cc

Index: src/s390/code-stubs-s390.cc
diff --git a/src/s390/code-stubs-s390.cc b/src/s390/code-stubs-s390.cc
index 20f8b54cb11b959cc816a8e1f372b78975c65c43..18af0387d5287140bc9fcb5294652986f216ce6c 100644
--- a/src/s390/code-stubs-s390.cc
+++ b/src/s390/code-stubs-s390.cc
@@ -1193,7 +1193,7 @@ void JSEntryStub::Generate(MacroAssembler* masm) {
   ProfileEntryHookStub::MaybeCallEntryHook(masm);
 
 // saving floating point registers
-#if V8_HOST_ARCH_S390X
+#if V8_TARGET_ARCH_S390X
   // 64bit ABI requires f8 to f15 be saved
   __ lay(sp, MemOperand(sp, -8 * kDoubleSize));
   __ std(d8, MemOperand(sp));
@@ -1355,7 +1355,7 @@ void JSEntryStub::Generate(MacroAssembler* masm) {
   __ la(sp, MemOperand(sp, 10 * kPointerSize));
 
 // saving floating point registers
-#if V8_HOST_ARCH_S390X
+#if V8_TARGET_ARCH_S390X
   // 64bit ABI requires f8 to f15 be saved
   __ ld(d8, MemOperand(sp));
   __ ld(d9, MemOperand(sp, 1 * kDoubleSize));