nimble/host: move BLE_GATT_CHR_CLI_SUP_FEAT_SZ to public header

Move BLE_GATT_CHR_CLI_SUP_FEAT_SZ to public header.

Author: piotrnarajowski

nimble/host/include/host/ble_gatt.h

@@ -198,6 +198,9 @@ struct ble_hs_cfg;
 
 /** @} */
 
+/** Client supported features size. For now only 3 bits in first octet are defined */
+#define BLE_GATT_CHR_CLI_SUP_FEAT_SZ 1
+
 /*** @client. */
 /** Represents a GATT error. */
 struct ble_gatt_error {

nimble/host/src/ble_gatt_priv.h

@@ -88,11 +88,6 @@ extern STATS_SECT_DECL(ble_gatts_stats) ble_gatts_stats;
 
 #define BLE_GATT_CHR_DECL_SZ_16         5
 #define BLE_GATT_CHR_DECL_SZ_128        19
-#define BLE_GATT_CHR_CLI_SUP_FEAT_SZ    1
-/**
- * For now only 3 bits in first octet are defined
- *
- */
 #define BLE_GATT_CHR_CLI_SUP_FEAT_MASK  7
 #define BLE_GATT_DB_HASH_SZ             16