wolfssl: update to 4.8.1-stable

Changes from 4.7.0:
  Fix one high (OCSP verification issue) and two low vulnerabilities
  Improve compatibility layer
  Other improvements and fixes

For detailed changes refer to https://github.com/wolfSSL/wolfssl/releases

Signed-off-by: Ivan Pavlov <AuthorReflex@gmail.com>

package/libs/wolfssl/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=wolfssl
-PKG_VERSION:=4.7.0-stable
-PKG_RELEASE:=2
+PKG_VERSION:=4.8.1-stable
+PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/wolfSSL/wolfssl/archive/v$(PKG_VERSION)
-PKG_HASH:=b0e740b31d4d877d540ad50cc539a8873fc41af02bd3091c4357b403f7106e31
+PKG_HASH:=50db45f348f47e00c93dd244c24108220120cb3cc9d01434789229c32937c444
 
 PKG_FIXUP:=libtool libtool-abiver
 PKG_INSTALL:=1

package/libs/wolfssl/patches/100-disable-hardening-check.patch

@@ -1,6 +1,6 @@
 --- a/wolfssl/wolfcrypt/settings.h
 +++ b/wolfssl/wolfcrypt/settings.h
-@@ -2255,7 +2255,7 @@ extern void uITRON4_free(void *p) ;
+@@ -2274,7 +2274,7 @@ extern void uITRON4_free(void *p) ;
  #endif
  
  /* warning for not using harden build options (default with ./configure) */

package/libs/wolfssl/patches/200-ecc-rng.patch

@@ -11,7 +11,7 @@ RNG regardless of the built settings for wolfssl.
 
 --- a/wolfcrypt/src/ecc.c
 +++ b/wolfcrypt/src/ecc.c
-@@ -10293,21 +10293,21 @@ void wc_ecc_fp_free(void)
+@@ -10938,21 +10938,21 @@ void wc_ecc_fp_free(void)
  
  #endif /* FP_ECC */
  
@@ -37,7 +37,7 @@ RNG regardless of the built settings for wolfssl.
  
 --- a/wolfssl/wolfcrypt/ecc.h
 +++ b/wolfssl/wolfcrypt/ecc.h
-@@ -584,10 +584,8 @@ WOLFSSL_API
+@@ -616,10 +616,8 @@ WOLFSSL_API
  void wc_ecc_fp_free(void);
  WOLFSSL_LOCAL
  void wc_ecc_fp_init(void);