Revert "package/libcap: backport upstream patch to fix build on Xtensa"

This reverts commit 98aa540ffb09cc1cbb3abbf29fd054dab4e5d370.

The commit was wrongly applied. The bump was not present on the LTS
branch, so the build error did not occur there and the patch doesn't
apply.

Fixes:
  https://autobuild.buildroot.org/results/1cf/1cfb62c8eac534e748afe37f94ae2291c104d345

Signed-off-by: Thomas Perale <thomas.perale@mind.be>
Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>

package/libcap/0002-Support-for-__xtensa__-architecture.patch

@@ -1,65 +0,0 @@
-From 9421f4ff93c341482d3aa4a0cd57aba1978bdd62 Mon Sep 17 00:00:00 2001
-From: "Andrew G. Morgan" <morgan@kernel.org>
-Date: Sat, 19 Apr 2025 08:00:23 -0700
-Subject: [PATCH] Support for __xtensa__ architecture.
-
-It looks like __xtensa__ defines SA_RESTORER, but my read of the
-kernel code suggests that signal handling does not require it be
-set. Specifically, if the SA_RESTORER flag is not set, the kernel
-inserts a sys_rt_sigreturn call into the stack frame.
-
-Signed-off-by: Andrew G. Morgan <morgan@kernel.org>
-Upstream: 6cdd8cd72ebcedd6b1b6c989a7e5722d5d87f35c
-Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
----
- psx/psx_calls.c | 13 +++++++------
- 1 file changed, 7 insertions(+), 6 deletions(-)
-
-diff --git a/psx/psx_calls.c b/psx/psx_calls.c
-index 8195964..aff105f 100644
---- a/psx/psx_calls.c
-+++ b/psx/psx_calls.c
-@@ -49,7 +49,8 @@
-     || defined(__powerpc__) || defined(__s390__) || defined(__riscv) \
-     || defined(__alpha__) || defined(__hppa__) || defined(__sh__) \
-     || defined(__m68k__) || defined(__sparc__) || defined(__arc__) \
--    || defined(__microblaze__) || defined(__or1k__)
-+    || defined(__microblaze__) || defined(__or1k__) \
-+    || defined(__xtensa__)
- 
- #undef _NSIG
- #undef _NSIG_BPW
-@@ -69,8 +70,7 @@
- #define _NSIG_WORDS  (_NSIG / _NSIG_BPW)
- 
- #if defined(__x86_64__) || defined(__i386__) \
--    || defined(__arm__) \
--    || defined(__powerpc__) \
-+    || defined(__arm__) || defined(__powerpc__) \
-     || defined(__arc__)
- /* field used */
- #define SA_RESTORER  0x04000000
-@@ -78,8 +78,9 @@
- 
- #if defined(SA_RESTORER) \
-     || defined(__aarch64__) \
--    || defined(__m68k__) || defined(__sh__) || defined(__sparc__) \
--    || defined(__s390__) || defined(__sparc__)
-+    || defined(__m68k__) || defined(__sh__) \
-+    || defined(__s390__) || defined(__sparc__) \
-+    || defined(__xtensa__)
- /* field defined */
- #define _HAS_SA_RESTORER   void *sa_restorer;
- #else
-@@ -93,7 +94,7 @@ typedef struct {
- #define sigset_t psx_sigset_t
- 
- struct psx_sigaction {
--#if defined(__m68k__) || defined(__alpha__)
-+#if defined(__m68k__) || defined(__alpha__) || defined(__xtensa__)
-     void *sa_handler;
-     sigset_t sa_mask;
-     unsigned long sa_flags;
--- 
-2.49.0
-