chore(PSVita): restrict OldSdk to PSVita

Minecraft.Client/PSVita/OldSdk.cpp

@@ -1,5 +1,5 @@
 #include "OldSdk.h"
-
+#ifdef __PSVITA__
 
 int sceNpBasicGetFriendOnlineStatus(const SceNpId *friendId, SceNpBasicOnlineStatus *status) {
 	if (status) *status = SCE_NP_BASIC_ONLINE_STATUS_UNKNOWN;
@@ -49,3 +49,4 @@ int sceNpBasicGetRequestedFriendRequestEntries(unsigned int startIndex, SceNpId
 SceInt32 sceAppUtilAppEventParseNpBasicJoinablePresence(const SceAppUtilAppEventParam *eventParam, SceAppUtilNpBasicJoinablePresenceParam *param) {
 	return -1;
 }
+#endif

Minecraft.Client/PSVita/OldSdk.h

@@ -1,4 +1,5 @@
 #pragma once
+#ifdef __PSVITA__
 #ifndef _OLD_SDK_H
 #define _OLD_SDK_H 1 
 
@@ -51,3 +52,4 @@ SceInt32 sceAppUtilAppEventParseNpBasicJoinablePresence(const SceAppUtilAppEvent
 #define SCE_APPUTIL_APPEVENT_TYPE_NP_BASIC_JOINABLE_PRESENCE	(3)	
 
 #endif
+#endif