PPC/s390: [cctest] Add V8_EXPORT_PRIVATE to arm/arm64 ports

Port 1a7d847c

R=sigurds@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: I13df37162f26a32512ac4897e4f6657db28d0fb6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1600756Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Commit-Queue: Junliang Yan <jyan@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#61346}

src/ppc/assembler-ppc.h

@@ -61,7 +61,7 @@ class SafepointTableBuilder;
 // Machine instruction Operands
 
 // Class Operand represents a shifter operand in data processing instructions
-class Operand {
+class V8_EXPORT_PRIVATE Operand {
  public:
   // immediate
   V8_INLINE explicit Operand(intptr_t immediate,
@@ -126,11 +126,10 @@ class Operand {
   friend class MacroAssembler;
 };
 
-
 // Class MemOperand represents a memory operand in load and store instructions
 // On PowerPC we have base register + 16bit signed value
 // Alternatively we can have a 16bit signed value immediate
-class MemOperand {
+class V8_EXPORT_PRIVATE MemOperand {
  public:
   explicit MemOperand(Register rn, int32_t offset = 0);
 
@@ -157,7 +156,6 @@ class MemOperand {
   friend class Assembler;
 };
 
-
 class DeferredRelocInfo {
  public:
   DeferredRelocInfo() {}

src/s390/assembler-s390.h

@@ -88,7 +88,7 @@ class SafepointTableBuilder;
 
 // Class Operand represents a shifter operand in data processing instructions
 // defining immediate numbers and masks
-class Operand {
+class V8_EXPORT_PRIVATE Operand {
  public:
   // immediate
   V8_INLINE explicit Operand(intptr_t immediate,
@@ -167,7 +167,7 @@ typedef int32_t Disp;
 //   1) a base register + 16 bit unsigned displacement
 //   2) a base register + index register + 16 bit unsigned displacement
 //   3) a base register + index register + 20 bit signed displacement
-class MemOperand {
+class V8_EXPORT_PRIVATE MemOperand {
  public:
   explicit MemOperand(Register rx, Disp offset = 0);
   explicit MemOperand(Register rx, Register rb, Disp offset = 0);