Define board_quiesce_devices() in a shared location

This undocumented function relies on arch-specific code to declare a nop
weak version. Add the weak function in common code instead to avoid having
to duplicate the same function in each arch.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Alexander Graf <agraf@suse.de>

arch/arm/include/asm/u-boot-arm.h

@@ -37,7 +37,6 @@ int	arch_early_init_r(void);
 
 /* board/.../... */
 int	board_init(void);
-void	board_quiesce_devices(void);
 
 /* cpu/.../interrupt.c */
 int	arch_interrupt_init	(void);

arch/x86/include/asm/u-boot-x86.h

@@ -84,7 +84,6 @@ static inline __attribute__((no_instrument_function)) uint64_t rdtsc(void)
 /* board/... */
 void timer_set_tsc_base(uint64_t new_base);
 uint64_t timer_get_tsc(void);
-void board_quiesce_devices(void);
 
 void quick_ram_check(void);
 

arch/x86/lib/bootm.c

@@ -27,10 +27,6 @@ DECLARE_GLOBAL_DATA_PTR;
 
 #define COMMAND_LINE_OFFSET 0x9000
 
-__weak void board_quiesce_devices(void)
-{
-}
-
 void bootm_announce_and_cleanup(void)
 {
 	printf("\nStarting kernel ...\n\n");

common/bootm.c

@@ -46,6 +46,10 @@ static const void *boot_get_kernel(cmd_tbl_t *cmdtp, int flag, int argc,
 				   char * const argv[], bootm_headers_t *images,
 				   ulong *os_data, ulong *os_len);
 
+__weak void board_quiesce_devices(void)
+{
+}
+
 #ifdef CONFIG_LMB
 static void boot_start_lmb(bootm_headers_t *images)
 {

include/bootm.h

@@ -72,4 +72,6 @@ int bootm_decomp_image(int comp, ulong load, ulong image_start, int type,
 		       void *load_buf, void *image_buf, ulong image_len,
 		       uint unc_len, ulong *load_end);
 
+void board_quiesce_devices(void);
+
 #endif