Remove unused support code for refok sections.

/* .data section */

#define DATA_DATA							\

	*(.data)							\

	*(.data.init.refok)						\

	*(.ref.data)							\

	DEV_KEEP(init.data)						\

	DEV_KEEP(exit.data)						\

		*(.text.hot)						\

		*(.text)						\

		*(.ref.text)						\

		*(.text.init.refok)					\

		*(.exit.text.refok)					\

	DEV_KEEP(init.text)						\

	DEV_KEEP(exit.text)						\

	CPU_KEEP(init.text)						\

#define __refdata        __section(.ref.data)

#define __refconst       __section(.ref.rodata)

/* backward compatibility note

 *  A few places hardcode the old section names:

 *  .text.init.refok

 *  .data.init.refok

 *  .exit.text.refok

 *  They should be converted to use the defines from this file

 */

/* compatibility defines */

#define __init_refok     __ref

#define __initdata_refok __refdata

/* data section */

static const char *data_sections[] = { DATA_SECTIONS, NULL };

/* sections that may refer to an init/exit section with no warning */

static const char *initref_sections[] =

{

	".text.init.refok*",

	".exit.text.refok*",

	".data.init.refok*",

	NULL

};

/* symbols in .data that may refer to init/exit sections */

static const char *symbol_white_list[] =

/**

 * Whitelist to allow certain references to pass with no warning.

 *

 * Pattern 0:

 *   Do not warn if funtion/data are marked with __init_refok/__initdata_refok.

 *   The pattern is identified by:

 *   fromsec = .text.init.refok* | .data.init.refok*

 *

 * Pattern 1:

 *   If a module parameter is declared __initdata and permissions=0

 *   then this is legal despite the warning generated.

static int secref_whitelist(const char *fromsec, const char *fromsym,

			    const char *tosec, const char *tosym)

{

	/* Check for pattern 0 */

	if (match(fromsec, initref_sections))

		return 0;

	/* Check for pattern 1 */

	if (match(tosec, init_data_sections) &&

	    match(fromsec, data_sections) &&