[openwrt/openwrt] wolfssl: fix math library build

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/c2aa816f28e0fe2f6f77d0c6da4eba19ea8db4ea

commit c2aa816f28e0fe2f6f77d0c6da4eba19ea8db4ea
Author: John Audia <therealgraysky at proton.me>
AuthorDate: Thu Jul 21 15:59:30 2022 -0400

    wolfssl: fix math library build
    
    Apply upstream patch[1] to fix breakage around math libraries.
    This can likely be removed when 5.5.0-stable is tagged and released.
    
    Build system: x86_64
    Build-tested: bcm2711/RPi4B
    Run-tested: bcm2711/RPi4B
    
    1. https://github.com/wolfSSL/wolfssl/pull/5390
    
    Signed-off-by: John Audia <therealgraysky at proton.me>
---
 ...rand_prime-s-preprocessor-gating-to-match.patch | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/package/libs/wolfssl/patches/101-update-sp_rand_prime-s-preprocessor-gating-to-match.patch b/package/libs/wolfssl/patches/101-update-sp_rand_prime-s-preprocessor-gating-to-match.patch
new file mode 100644
index 0000000000..4b56c1568a
--- /dev/null
+++ b/package/libs/wolfssl/patches/101-update-sp_rand_prime-s-preprocessor-gating-to-match.patch
@@ -0,0 +1,23 @@
+From dc92ec2aa9cb76b782bdba3fc5203267ebf39994 Mon Sep 17 00:00:00 2001
+From: Kareem <kareem at wolfssl.com>
+Date: Fri, 22 Jul 2022 11:07:46 -0700
+Subject: [PATCH] Update sp_rand_prime's preprocessor gating to match
+ wolfSSL_BN_generate_prime_ex's.
+
+---
+ wolfcrypt/src/sp_int.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/wolfcrypt/src/sp_int.c
++++ b/wolfcrypt/src/sp_int.c
+@@ -15647,8 +15647,8 @@ int sp_radix_size(sp_int* a, int radix,
+  * Prime number generation and checking.
+  ***************************************/
+ 
+-#if defined(WOLFSSL_KEY_GEN) && (!defined(NO_DH) || !defined(NO_DSA)) && \
+-    !defined(WC_NO_RNG)
++#if defined(WOLFSSL_KEY_GEN) && (!defined(NO_RSA) || !defined(NO_DH) || \
++    !defined(NO_DSA)) && !defined(WC_NO_RNG)
+ /* Generate a random prime for RSA only.
+  *
+  * @param  [out]  r     SP integer to hold result.