SDL: Fixed building with iOS SDK prior to 13.0

SDL Commits
1 
From a4c04ad230ab3fb733ee6804530d7eccba365cc8 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Tue, 30 Nov 2021 10:32:21 -0800
Subject: [PATCH] Fixed building with iOS SDK prior to 13.0

Fixes https://github.com/libsdl-org/SDL/pull/5045
---
 src/joystick/iphoneos/SDL_mfijoystick.m | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/joystick/iphoneos/SDL_mfijoystick.m b/src/joystick/iphoneos/SDL_mfijoystick.m
index 3508736e6e..30e4389001 100644
--- a/src/joystick/iphoneos/SDL_mfijoystick.m
+++ b/src/joystick/iphoneos/SDL_mfijoystick.m
@@ -66,6 +66,9 @@ @interface GCController (SDL)
 #if defined(__MACOSX__) && (__MAC_OS_X_VERSION_MAX_ALLOWED <= 101600)
 + (BOOL)supportsHIDDevice:(IOHIDDeviceRef)device;
 #endif
+#if !((__IPHONE_OS_VERSION_MAX_ALLOWED >= 130000) || (__APPLETV_OS_VERSION_MAX_ALLOWED >= 130000) || (__MAC_OS_VERSION_MAX_ALLOWED >= 1500000))
+@property(nonatomic, readonly) NSString *productCategory;
+#endif
 @end
 @interface GCExtendedGamepad (SDL)
 #if !((__IPHONE_OS_VERSION_MAX_ALLOWED >= 121000) || (__APPLETV_OS_VERSION_MAX_ALLOWED >= 121000) || (__MAC_OS_VERSION_MAX_ALLOWED >= 1401000))