SDL: hidapi/linux/hid.c: define BUS_SPI if not already defined.

SDL Commits
1 
From 20dfb7df2c7b658ddacf6a835f9a9c6bd6f9c07a Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Wed, 31 May 2023 01:55:40 +0300
Subject: [PATCH] hidapi/linux/hid.c: define BUS_SPI if not already defined.

---
 src/hidapi/linux/hid.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/hidapi/linux/hid.c b/src/hidapi/linux/hid.c
index 9000caf9db2b..a364ac2e0840 100644
--- a/src/hidapi/linux/hid.c
+++ b/src/hidapi/linux/hid.c
@@ -44,6 +44,10 @@
 
 #include "../hidapi/hidapi.h"
 
+#ifndef BUS_SPI
+#define BUS_SPI 0x1C
+#endif
+
 #ifdef HIDAPI_ALLOW_BUILD_WORKAROUND_KERNEL_2_6_39
 /* This definitions first appeared in Linux Kernel 2.6.39 in linux/hidraw.h.
     hidapi doesn't support kernels older than that,