[PECOFF] Implement IMAGE_REL_I386_{SECTION,SECREL} relocations.

These relocations are used in .debug section.

llvm-svn: 196262
diff --git a/lld/lib/ReaderWriter/PECOFF/PECOFFLinkingContext.cpp b/lld/lib/ReaderWriter/PECOFF/PECOFFLinkingContext.cpp
index d59e3b3..835f32d 100644
--- a/lld/lib/ReaderWriter/PECOFF/PECOFFLinkingContext.cpp
+++ b/lld/lib/ReaderWriter/PECOFF/PECOFFLinkingContext.cpp
@@ -180,6 +180,8 @@
         LLD_CASE(IMAGE_REL_I386_ABSOLUTE)
         LLD_CASE(IMAGE_REL_I386_DIR32)
         LLD_CASE(IMAGE_REL_I386_DIR32NB)
+        LLD_CASE(IMAGE_REL_I386_SECTION)
+        LLD_CASE(IMAGE_REL_I386_SECREL)
         LLD_CASE(IMAGE_REL_I386_REL32)
         .Default(-1);
 #undef LLD_CASE
@@ -198,6 +200,8 @@
     LLD_CASE(IMAGE_REL_I386_ABSOLUTE)
     LLD_CASE(IMAGE_REL_I386_DIR32)
     LLD_CASE(IMAGE_REL_I386_DIR32NB)
+    LLD_CASE(IMAGE_REL_I386_SECTION)
+    LLD_CASE(IMAGE_REL_I386_SECREL)
     LLD_CASE(IMAGE_REL_I386_REL32)
 #undef LLD_CASE
   }