[qca-ssdk]: Enable NAPT by default

Enable NAPT by default.

Change-Id: I9484fc717b801d8c7eafe39f9ed5d5773862c5af
Signed-off-by: xiaofeis <xiaofeis@codeaurora.org>
diff --git a/src/init/ssdk_init.c b/src/init/ssdk_init.c
index 883e6ef..ab2eba3 100755
--- a/src/init/ssdk_init.c
+++ b/src/init/ssdk_init.c
@@ -1833,7 +1833,7 @@
 	/*set normal hash and disable nat/napt*/
 	qca_switch_reg_read(0, 0x0e38, (a_uint8_t *)&reg_value, 4);
 	reg_value = (reg_value|0x1000000|0x8);
-	reg_value &= ~3;
+	reg_value &= ~2;
 	qca_switch_reg_write(0, 0x0e38, (a_uint8_t *)&reg_value, 4);
 	fal_ip_vrf_base_addr_set(0, 0, 0);