pem_to_pub_c.py: fix issues reported by pycodestyle and re-indent

Fixes issues reported by: pycodestyle pem_to_pub_c.py and re-indent
(4 spaces).
Patch obtained by running: autopep8 -i -a -a pem_to_pub_c.py.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/scripts/pem_to_pub_c.py b/scripts/pem_to_pub_c.py
index 6b8fa36..ddc17c1 100755
--- a/scripts/pem_to_pub_c.py
+++ b/scripts/pem_to_pub_c.py
@@ -4,54 +4,59 @@
 # Copyright (c) 2015, Linaro Limited
 #
 
+
 def get_args():
-	import argparse
+    import argparse
 
-	parser = argparse.ArgumentParser()
-	parser.add_argument('--prefix', required=True, \
-		help='Prefix for the public key exponent and modulus in c file')
+    parser = argparse.ArgumentParser()
+    parser.add_argument(
+        '--prefix',
+        required=True,
+        help='Prefix for the public key exponent and modulus in c file')
 
-	parser.add_argument('--out', required=True, \
-		help='Name of c file for the public key')
+    parser.add_argument('--out', required=True,
+                        help='Name of c file for the public key')
 
-	parser.add_argument('--key', required=True, help='Name of key file')
+    parser.add_argument('--key', required=True, help='Name of key file')
 
-	return parser.parse_args()
+    return parser.parse_args()
+
 
 def main():
-	import array
-	from Crypto.PublicKey import RSA
-	from Crypto.Util.number import long_to_bytes
+    import array
+    from Crypto.PublicKey import RSA
+    from Crypto.Util.number import long_to_bytes
 
-	args = get_args();
+    args = get_args()
 
-	f = open(args.key, 'r')
-	key = RSA.importKey(f.read())
-	f.close
+    f = open(args.key, 'r')
+    key = RSA.importKey(f.read())
+    f.close
 
-	f = open(args.out, 'w')
+    f = open(args.out, 'w')
 
-	f.write("#include <stdint.h>\n");
-	f.write("#include <stddef.h>\n\n");
+    f.write("#include <stdint.h>\n")
+    f.write("#include <stddef.h>\n\n")
 
-	f.write("const uint32_t " + args.prefix + "_exponent = " +
-		str(key.publickey().e) + ";\n\n")
+    f.write("const uint32_t " + args.prefix + "_exponent = " +
+            str(key.publickey().e) + ";\n\n")
 
-	f.write("const uint8_t " + args.prefix + "_modulus[] = {\n")
-	i = 0;
-	for x in array.array("B", long_to_bytes(key.publickey().n)):
-		f.write("0x" + '{0:02x}'.format(x) + ",")
-		i = i + 1;
-		if i % 8 == 0:
-			f.write("\n");
-		else:
-			f.write(" ");
-	f.write("};\n");
+    f.write("const uint8_t " + args.prefix + "_modulus[] = {\n")
+    i = 0
+    for x in array.array("B", long_to_bytes(key.publickey().n)):
+        f.write("0x" + '{0:02x}'.format(x) + ",")
+        i = i + 1
+        if i % 8 == 0:
+            f.write("\n")
+        else:
+            f.write(" ")
+    f.write("};\n")
 
-	f.write("const size_t " + args.prefix + "_modulus_size = sizeof(" + \
-		args.prefix + "_modulus);\n")
+    f.write("const size_t " + args.prefix + "_modulus_size = sizeof(" +
+            args.prefix + "_modulus);\n")
 
-	f.close()
+    f.close()
+
 
 if __name__ == "__main__":
-	main()
+    main()