Change owner of Hexagon backend

Author: kparzysz

llvm/CODE_OWNERS.TXT

@@ -131,6 +131,10 @@ N: Benjamin Kramer
 E: [email protected]
 D: DWARF Parser
 
+N: Sundeep Kushwaha
+E: [email protected]
+D: Hexagon Backend
+
 N: Florian Hahn
 E: [email protected]
 D: Loop Vectorizer
@@ -172,10 +176,6 @@ N: Diego Novillo
 E: [email protected]
 D: SampleProfile and related parts of ProfileData
 
-N: Krzysztof Parzyszek
-E: [email protected]
-D: Hexagon Backend
-
 N: Nigel Perks
 E: [email protected]
 D: XCore Backend