Fix spelling mistakes in Hexagon target comments. NFC.

Identified by Pedro Giffuni in PR27636.

llvm-svn: 287248
diff --git a/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp b/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
index 65ac1f0..34ce3e6 100644
--- a/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonInstrInfo.cpp
@@ -2159,7 +2159,7 @@
 }
 
 
-// Return true if a given MI can accomodate given offset.
+// Return true if a given MI can accommodate given offset.
 // Use abs estimate as oppose to the exact number.
 // TODO: This will need to be changed to use MC level
 // definition of instruction extendable field size.
@@ -3204,7 +3204,7 @@
 }
 
 
-// Inserts branching instructions in reverse order of their occurence.
+// Inserts branching instructions in reverse order of their occurrence.
 // e.g. jump_t t1 (i1)
 // jump t2        (i2)
 // Jumpers = {i2, i1}