bt-kernel: Additional bazel configuration

- add support to copy *.ko to out dir
- enable conditional compilation with config flags
- enable CONFIG_BT_HW_SECURE_DISABLE with dependency on securemsm-kernel
- re-enable compilation of bt_fm_slim with new headers
- add fallthrough attribute btfm_slim_hw_interface.c
- move BTFMSLIM_DEV_NAME to btfm_slim.h
- add target.bzl file to define specific targets

Change-Id: I7f7920870d81125f95b020ef33df77df3f937682
Signed-off-by: Franklin Abreu Bueno <quic_fabreu@quicinc.com>

BUILD.bazel

@@ -1,5 +1,13 @@
-load(":bt_kernel.bzl", "define_bt_modules")
+load("//build/kernel/kleaf:kernel.bzl", "ddk_headers")
 
-targets = ["pineapple"]
+ddk_headers(
+    name = "btfmcodec_headers",
+    hdrs = glob([
+        "btfmcodec/include/*.h"
+    ]),
+    includes = ["btfmcodec/include"]
+)
 
-define_bt_modules(targets)
+load(":target.bzl", "define_pineapple")
+
+define_pineapple()