put the embedded blob code section in .rodata to fix x-only

discussed with deraadt@, kettenis@, tb@

www/chromium/Makefile

@@ -7,6 +7,7 @@ DPB_PROPERTIES=		parallel parallel2
 COMMENT=		Chromium browser
 
 V=			109.0.5414.74
+REVISION=		0
 
 DISTNAME=		chromium-${V}
 

www/chromium/patches/patch-v8_src_snapshot_embedded_embedded-file-writer_cc

@@ -0,0 +1,15 @@
+Index: v8/src/snapshot/embedded/embedded-file-writer.cc
+--- v8/src/snapshot/embedded/embedded-file-writer.cc.orig
++++ v8/src/snapshot/embedded/embedded-file-writer.cc
+@@ -137,7 +137,11 @@ void EmbeddedFileWriter::WriteCodeSection(PlatformEmbe
+   w->Comment(
+       "The embedded blob code section starts here. It contains the builtin");
+   w->Comment("instruction streams.");
++#if V8_TARGET_OS_OPENBSD
++  w->SectionRoData();
++#else
+   w->SectionText();
++#endif
+ 
+ #if V8_TARGET_ARCH_IA32 || V8_TARGET_ARCH_X64
+   // UMA needs an exposed function-type label at the start of the embedded