compat: update for RHEL 8.5

RHEL 8.5 has been released. Replace all ISCENTOS8S checks with ISRHEL8.
Increase RHEL_MINOR for CentOS 8 Stream detection to 6.

Signed-off-by: Peter Georg <peter.georg@physik.uni-regensburg.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

Author: Peter Georg

src/compat/compat-asm.h

@@ -15,7 +15,7 @@
 #define ISRHEL7
 #elif RHEL_MAJOR == 8
 #define ISRHEL8
-#if RHEL_MINOR >= 4
+#if RHEL_MINOR >= 6
 #define ISCENTOS8S
 #endif
 #endif
@@ -51,7 +51,7 @@
 #undef pull
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 76) && !defined(ISCENTOS8S) && !defined(SYM_FUNC_START)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 76) && !defined(ISRHEL8) && !defined(SYM_FUNC_START)
 #define SYM_FUNC_START ENTRY
 #define SYM_FUNC_END ENDPROC
 #endif

src/compat/compat.h

@@ -16,7 +16,7 @@
 #define ISRHEL7
 #elif RHEL_MAJOR == 8
 #define ISRHEL8
-#if RHEL_MINOR >= 5
+#if RHEL_MINOR >= 6
 #define ISCENTOS8S
 #endif
 #endif
@@ -855,7 +855,7 @@ static inline void skb_mark_not_on_list(struct sk_buff *skb)
 #endif
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 5, 0) && !defined(ISCENTOS8S)
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 5, 0) && !defined(ISRHEL8)
 #define genl_dumpit_info(cb) ({ \
 	struct { struct nlattr **attrs; } *a = (void *)((u8 *)cb->args + offsetofend(struct dump_ctx, next_allowedip)); \
 	BUILD_BUG_ON(sizeof(cb->args) < offsetofend(struct dump_ctx, next_allowedip) + sizeof(*a)); \