sbe: use python3 for build scripts

src/boot/sbeCompression.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 # IBM_PROLOG_BEGIN_TAG
 # This is an automatically generated prolog.
 #

src/build/Makefile

@@ -244,7 +244,7 @@ report: $(P9_XIP_TOOL) $(IMG_DIR)/$(IMAGE_NAME).bin
 
 # Create build Info file
 buildInfo:
-	python2 buildInfo.py $(GENFILES_DIR)
+	python3 buildInfo.py $(GENFILES_DIR)
 
 buildtag:
 	./updateBuildTag.py $(P9_XIP_TOOL) $(IMG_DIR) $(IMAGE_NAME)
@@ -321,7 +321,7 @@ ppe_trace_bin:
 
 # generate whitelist and blacklist security algorithm
 security: $(OBJDIR)
-	python2 $(SECURITY_SRC_DIR)/securityRegListGen.py -f $(SECURITY_LIST) -o $(GENFILES_DIR)
+	python3 $(SECURITY_SRC_DIR)/securityRegListGen.py -f $(SECURITY_LIST) -o $(GENFILES_DIR)
 
 # Build hwp_error_info.H.  If the script fails then print the contents of
 # the header and then delete whatever garbage the script left to force it to

src/build/buildInfo.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 # IBM_PROLOG_BEGIN_TAG
 # This is an automatically generated prolog.
 #

src/build/parsAndCutElf.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 # IBM_PROLOG_BEGIN_TAG
 # This is an automatically generated prolog.
 #

src/build/updateBuildTag.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/python3
 # IBM_PROLOG_BEGIN_TAG
 # This is an automatically generated prolog.
 #