Bluetooth: Fix build after header cleanup

Some Kconfig dependencies are needed after my recent cleanup, since
the core code has its own option.

Since btmtksdio does not actually call h4_recv_buf(), move the
definitions it uses outside the BT_HCIUART_H4 gate in hci_uart.h to
avoid adding a dependency for btmtksdio.

The rest I touched (bpa10x, btmtkuart, and btnxpuart) do really call
h4_recv_buf(), so the dependency is required, add it for them.

Fixes: 0e272fc7e17d ("Bluetooth: remove duplicate h4_recv_buf() in header")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Calvin Owens <[email protected]>
Signed-off-by: Luiz Augusto von Dentz <[email protected]>

Author: jcalvinowens

drivers/bluetooth/Kconfig

@@ -312,7 +312,9 @@ config BT_HCIBCM4377
 
 config BT_HCIBPA10X
 	tristate "HCI BPA10x USB driver"
+	depends on BT_HCIUART
 	depends on USB
+	select BT_HCIUART_H4
 	help
 	  Bluetooth HCI BPA10x USB driver.
 	  This driver provides support for the Digianswer BPA 100/105 Bluetooth
@@ -437,8 +439,10 @@ config BT_MTKSDIO
 
 config BT_MTKUART
 	tristate "MediaTek HCI UART driver"
+	depends on BT_HCIUART
 	depends on SERIAL_DEV_BUS
 	depends on USB || !BT_HCIBTUSB_MTK
+	select BT_HCIUART_H4
 	select BT_MTK
 	help
 	  MediaTek Bluetooth HCI UART driver.
@@ -483,7 +487,9 @@ config BT_VIRTIO
 
 config BT_NXPUART
 	tristate "NXP protocol support"
+	depends on BT_HCIUART
 	depends on SERIAL_DEV_BUS
+	select BT_HCIUART_H4
 	select CRC32
 	select CRC8
 	help

drivers/bluetooth/hci_uart.h

@@ -121,10 +121,6 @@ void hci_uart_set_flow_control(struct hci_uart *hu, bool enable);
 void hci_uart_set_speeds(struct hci_uart *hu, unsigned int init_speed,
 			 unsigned int oper_speed);
 
-#ifdef CONFIG_BT_HCIUART_H4
-int h4_init(void);
-int h4_deinit(void);
-
 struct h4_recv_pkt {
 	u8  type;	/* Packet type */
 	u8  hlen;	/* Header length */
@@ -162,6 +158,10 @@ struct h4_recv_pkt {
 	.lsize = 2, \
 	.maxlen = HCI_MAX_FRAME_SIZE \
 
+#ifdef CONFIG_BT_HCIUART_H4
+int h4_init(void);
+int h4_deinit(void);
+
 struct sk_buff *h4_recv_buf(struct hci_dev *hdev, struct sk_buff *skb,
 			    const unsigned char *buffer, int count,
 			    const struct h4_recv_pkt *pkts, int pkts_count);