[Buildroot] [PATCH 1/1] package/vboot-utils: Fix build with OpenSSL >= 3.x

Remove -Werror from CFLAGS to prevent build errors due to warnings of
deprecated functions:

futility/cmd_create.c: In function ‘vb1_make_keypair’:
futility/cmd_create.c:96:9: error: ‘PEM_read_RSAPrivateKey’ is deprecated:
 Since OpenSSL 3.0 [-Werror=deprecated-declarations]
   96 |         rsa_key = PEM_read_RSAPrivateKey(fp, NULL, NULL, NULL);

futility/cmd_create.c:155:9: error: ‘RSA_free’ is deprecated:
 Since OpenSSL 3.0 [-Werror=deprecated-declarations]
  155 |         RSA_free(rsa_key);

futility/cmd_create.c:191:17: error: ‘PEM_read_RSA_PUBKEY’ is deprecated:
 Since OpenSSL 3.0 [-Werror=deprecated-declarations]
  191 |                 rsa_key = PEM_read_RSA_PUBKEY(fp, NULL, NULL, NULL);

futility/cmd_create.c:199:9: error: ‘RSA_get0_key’ is deprecated:
 Since OpenSSL 3.0 [-Werror=deprecated-declarations]
  199 |         RSA_get0_key(rsa_key, NULL, NULL, &rsa_d);

cc1: all warnings being treated as errors

The oldest build error dates back to 2024 so a backport to LTS branches
should be considered.

Fixes:
https://autobuild.buildroot.net/results/375/37554c5ce784835a36f0068d9a0c1cd931212b44/
https://autobuild.buildroot.net/results/1fa/1fabca11c7839d2d7ed809f30482595719a29c92/

Signed-off-by: Bernd Kuhls <redacted>
---
 package/vboot-utils/vboot-utils.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/vboot-utils/vboot-utils.mk b/package/vboot-utils/vboot-utils.mk
index dc0b1365b7..14def4c708 100644
--- a/package/vboot-utils/vboot-utils.mk
+++ b/package/vboot-utils/vboot-utils.mk

@@ -33,6 +33,7 @@ define HOST_VBOOT_UTILS_BUILD_CMDS
 		CC="$(HOSTCC)" \
 		CPPFLAGS="$(HOST_CFLAGS) -D_LARGEFILE64_SOURCE -D_GNU_SOURCE" \
 		LDFLAGS="$(HOST_LDFLAGS)" \
+		WERROR="" \
 		ARCH=arm \
 		futil cgpt
 endef

-- 
2.47.3

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