gcc: 15.x: update to 15.2

Update GCC15 to 15.2 to include upstream bugfixes.

Link: https://github.com/openwrt/openwrt/pull/19713
Signed-off-by: Robert Marko <robimarko@gmail.com>

toolchain/gcc/Config.version

@@ -15,7 +15,7 @@ config GCC_VERSION
 	default EXTERNAL_GCC_VERSION	if EXTERNAL_TOOLCHAIN && !NATIVE_TOOLCHAIN
 	default "12.3.0"	if GCC_VERSION_12
 	default "13.3.0"	if GCC_VERSION_13
-	default "15.1.0"	if GCC_VERSION_15
+	default "15.2.0"	if GCC_VERSION_15
 	default "14.3.0"
 
 config GCC_USE_DEFAULT_VERSION

toolchain/gcc/common.mk

@@ -46,8 +46,8 @@ ifeq ($(PKG_VERSION),14.3.0)
   PKG_HASH:=e0dc77297625631ac8e50fa92fffefe899a4eb702592da5c32ef04e2293aca3a
 endif
 
-ifeq ($(PKG_VERSION),15.1.0)
-  PKG_HASH:=e2b09ec21660f01fecffb715e0120265216943f038d0e48a9868713e54f06cea
+ifeq ($(PKG_VERSION),15.2.0)
+  PKG_HASH:=438fd996826b0c82485a29da03a72d71d6e3541a83ec702df4271f6fe025d24e
 endif
 
 PATCH_DIR=../patches-$(GCC_MAJOR_VERSION).x

toolchain/gcc/patches-15.x/910-mbsd_multi.patch

@@ -40,7 +40,7 @@ Date:   Tue Jul 31 00:52:27 2007 +0000
      case OPT_fconstant_string_class_:
        constant_string_class_name = arg;
        break;
-@@ -1359,6 +1368,47 @@ c_common_init (void)
+@@ -1361,6 +1370,47 @@ c_common_init (void)
        return false;
      }