ANDROID: Add pinctrl core.h header to unsafe header.

The use of the pinctrl structure is essential
to register various pinctrl callback functions
and configure pinmux.

Therefore, add the pinctrl core.h to the unsafe header
so that it can be included.

Bug: 375956157
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>
Change-Id: I8dba34f159fea6f09225e1d7e8d374e4fa71a428

BUILD.bazel

@@ -1504,11 +1504,12 @@ ddk_headers(
     name = "all_headers_unsafe",
     hdrs = [
         "drivers/gpu/drm/virtio/virtgpu_trace.h",
+        "drivers/pinctrl/core.h",
     ],
     # The list of include directories where source files can #include headers
     # from. In other words, these are the `-I` option to the C compiler.
     # Unsafe include directories are appended to ccflags-y.
-    includes = [],
+    includes = ["drivers/pinctrl"],
     visibility = ["//visibility:private"],
 )