CONFIG_H1940BT is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Control the state of H1940 bluetooth chip

modulename: h1940-bluetooth.ko

configname: CONFIG_H1940BT

Linux Kernel Configuration
└─>S3C2410 Machines
└─>Control the state of H1940 bluetooth chip
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
This is a simple driver that is able to control
the state of built in bluetooth chip on h1940.

source code:
arch/arm/mach-s3c2410/h1940-bluetooth.c
selects
CONFIG_RFKILL

depends
CONFIG_ARCH_H1940 |
| CONFIG_ARCH_S3C24XX or CONFIG_CPU_S3C2410 or CONFIG_RFKILL