net: ipa: rename the NAT enumerated type

Rename the ipa_nat_en enumerated type to be ipa_nat_type, and rename
its symbols accordingly.  Add a comment indicating those values are
also used in the IPA status nat_type field.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ipa/ipa_endpoint.c

@@ -68,6 +68,8 @@ enum ipa_status_mask {
 	IPA_STATUS_MASK_BYTE_LIMIT		= BIT(15),
 };
 
+/** The IPA status nat_type field uses enum ipa_nat_type hardware values */
+
 /* Status element provided by hardware */
 struct ipa_status {
 	u8 opcode;		/* enum ipa_status_opcode */
@@ -570,7 +572,7 @@ static void ipa_endpoint_init_nat(struct ipa_endpoint *endpoint)
 		return;
 
 	reg = ipa_reg(ipa, ENDP_INIT_NAT);
-	val = ipa_reg_encode(reg, NAT_EN, IPA_NAT_BYPASS);
+	val = ipa_reg_encode(reg, NAT_EN, IPA_NAT_TYPE_BYPASS);
 
 	iowrite32(val, ipa->reg_virt + ipa_reg_n_offset(reg, endpoint_id));
 }

drivers/net/ipa/ipa_reg.h

@@ -382,11 +382,11 @@ enum ipa_reg_endp_init_nat_field_id {
 	NAT_EN,
 };
 
-/** enum ipa_nat_en - ENDP_INIT_NAT register NAT_EN field value */
-enum ipa_nat_en {
-	IPA_NAT_BYPASS				= 0x0,
-	IPA_NAT_SRC				= 0x1,
-	IPA_NAT_DST				= 0x2,
+/** enum ipa_nat_type - ENDP_INIT_NAT register NAT_EN field value */
+enum ipa_nat_type {
+	IPA_NAT_TYPE_BYPASS			= 0,
+	IPA_NAT_TYPE_SRC			= 1,
+	IPA_NAT_TYPE_DST			= 2,
 };
 
 /* ENDP_INIT_HDR register */