linux-firmware: Add firmware file for Intel Bluetooth 9260

This patch adds the firmware file for Intel Bluetooth 9260
Also it is known as Intel ThunderPeak (THP).

FW Build: REL0186

9260:
BL Ver: 37 12 10 06 01 2a 34 0f 00
FW Ver: 37 12 10 23 01 ba 2c 11 00

Release Version: 20.10
ibt-18-x-x.sfi/ddc format will be used from 4.14 kernel version. Below
is the commit ID for driver changes.
https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=af3715e5cef8859571cabecc71e1cd4cc5869d6a

Signed-off-by: Amit K Bag <amit.k.bag@intel.com>
Signed-off-by: Tedd Ho-Jeong An <tedd.an@intel.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

WHENCE

@@ -2957,6 +2957,22 @@ File: intel/ibt-17-1.sfi
 Version: BT_JeffersonPeak_A0_B0_REL0186
 File: intel/ibt-17-1.ddc
 Version: BT_JeffersonPeak_A0_B0_REL0186
+File: intel/ibt-18-16-1.sfi
+Version: BT_ThunderPeak_B0_B0_REL0186
+File: intel/ibt-18-16-1.ddc
+Version: BT_ThunderPeak_B0_B0_REL0186
+File: intel/ibt-18-2.sfi
+Version: BT_ThunderPeak_B0_B0_REL0186
+File: intel/ibt-18-2.ddc
+Version: BT_ThunderPeak_B0_B0_REL0186
+File: intel/ibt-18-0-1.sfi
+Version: BT_ThunderPeak_A0_B0_REL0186
+File: intel/ibt-18-0-1.ddc
+Version: BT_ThunderPeak_A0_B0_REL0186
+File: intel/ibt-18-1.sfi
+Version: BT_ThunderPeak_A0_B0_REL0186
+File: intel/ibt-18-1.ddc
+Version: BT_ThunderPeak_A0_B0_REL0186
 
 Licence: Redistributable. See LICENCE.ibt_firmware for details