ARM: qcom_defconfig: add Broadcom bluetooth options

Add Broadcom bluetooth options and serial bus in order to support
Bluetooth on the Nexus 5 phone.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Link: https://lore.kernel.org/r/20200129232031.34538-2-masneyb@onstation.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm/configs/qcom_defconfig

@@ -50,6 +50,9 @@ CONFIG_IP_PNP_DHCP=y
 # CONFIG_INET_XFRM_MODE_TUNNEL is not set
 # CONFIG_INET_XFRM_MODE_BEET is not set
 # CONFIG_IPV6 is not set
+CONFIG_BT=m
+CONFIG_BT_HCIUART=m
+CONFIG_BT_HCIUART_BCM=y
 CONFIG_CFG80211=m
 CONFIG_MAC80211=m
 CONFIG_RFKILL=y
@@ -111,6 +114,7 @@ CONFIG_SERIO_LIBPS2=y
 # CONFIG_LEGACY_PTYS is not set
 CONFIG_SERIAL_MSM=y
 CONFIG_SERIAL_MSM_CONSOLE=y
+CONFIG_SERIAL_DEV_BUS=y
 CONFIG_HW_RANDOM=y
 CONFIG_I2C=y
 CONFIG_I2C_CHARDEV=y