common: board: make initcalls static

Change board_init_f(), board_init_f_r() and board_init_r() to make
static calls instead of iterating over the init_sequence_f,
init_sequence_f_r and init_sequence_r arrays, respectively. This makes
the code a simpler (and even more so when initcall_run_list() is
later removed) and it reduces the binary size as well. Tested with
xilinx_zynqmp_kria_defconfig; bloat-o-meter results:

- With LTO
add/remove: 106/196 grow/shrink: 10/28 up/down: 31548/-33829 (-2281)
Total: Before=1070471, After=1068190, chg -0.21%
- Without LTO
add/remove: 0/54 grow/shrink: 3/0 up/down: 2322/-2832 (-510)
Total: Before=1121723, After=1121213, chg -0.05%

Execution time does not change in a noticeable way.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
diff --git a/arch/sh/lib/board.c b/arch/sh/lib/board.c
index 53b1c14..2daf54e 100644
--- a/arch/sh/lib/board.c
+++ b/arch/sh/lib/board.c
@@ -19,18 +19,13 @@
 
 void relocate_code(ulong start_addr_sp, gd_t *new_gd, ulong relocaddr)
 {
-	void (*reloc_board_init_r)(gd_t *gd, ulong dest) = board_init_r;
-
-	if (new_gd->reloc_off) {
+	if (new_gd->reloc_off)
 		memcpy((void *)new_gd->relocaddr,
 		       (void *)(new_gd->relocaddr - new_gd->reloc_off),
 		       new_gd->mon_len);
 
-		reloc_board_init_r += new_gd->reloc_off;
-	}
-
 	__asm__ __volatile__("mov.l %0, r15\n" : : "m" (new_gd->start_addr_sp));
 
 	while (1)
-		reloc_board_init_r(new_gd, 0x0);
+		board_init_r(new_gd, 0x0);
 }