hyperv: fix typo in Makefile.am.inc

The problem has been around for quite awhile - the misspelling was
faithfully copied from src/Makefile.am to src/hyperv/Makefile.am.inc
in commit 253b528c.
Signed-off-by: NLaine Stump <laine@laine.org>
ACKed-by: NMichal Privoznik <mprivozn@redhat.com>

src/hyperv/Makefile.inc.am

@@ -26,10 +26,10 @@ HYPERV_DRIVER_EXTRA_DIST = \
 	$(HYPERV_GENERATED_STAMP) \
 	$(NULL)
 
-DRIVER_SOURCE_FILES += $(HYPERV_DRIVER_SORUCES)
+DRIVER_SOURCE_FILES += $(HYPERV_DRIVER_SOURCES)
 
 EXTRA_DIST += \
-	$(HYPERV_DRIVER_SORUCES) \
+	$(HYPERV_DRIVER_SOURCES) \
 	$(HYPERV_DRIVER_EXTRA_DIST) \
 	$(NULL)