initial buildroot for linux 5.15

package/atop/0002-photosyst.c-fix-build-on-musl.patch

@@ -0,0 +1,38 @@
+From 34996ad1eb6d295382e7737ef34bd362abdd4944 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Tue, 19 Jan 2021 22:15:45 +0100
+Subject: [PATCH] photosyst.c: fix build on musl
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Build on musl is broken since version 2.6.0 and
+https://github.com/Atoptool/atop/commit/e889c66fbe1d0b7ae38fbcbaa46cea749257f486
+because limits.h is not included:
+
+photosyst.c: In function ‘lvmmapname’:
+photosyst.c:1624:14: error: ‘PATH_MAX’ undeclared (first use in this function); did you mean ‘AF_MAX’?
+   char  path[PATH_MAX];
+              ^~~~~~~~
+              AF_MAX
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ photosyst.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/photosyst.c b/photosyst.c
+index 3de874b..67ae92f 100644
+--- a/photosyst.c
++++ b/photosyst.c
+@@ -165,6 +165,7 @@
+ #include <dirent.h>
+ #include <sys/ioctl.h>
+ #include <sys/sysmacros.h>
++#include <limits.h>
+ 
+ #define SCALINGMAXCPU	8	// threshold for scaling info per CPU
+ 
+-- 
+2.29.2
+