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/test/py/tests/test_trace.py b/test/py/tests/test_trace.py
index 6ac1b22..fcdcbe2 100644
--- a/test/py/tests/test_trace.py
+++ b/test/py/tests/test_trace.py
@@ -201,7 +201,7 @@
     # Then look for this:
     #  u-boot-1     0.....   282.101375: funcgraph_exit:         0.006 us   |      }
     # Then check for this:
-    #  u-boot-1     0.....   282.101375: funcgraph_entry:        0.000 us   |    calc_reloc_ofs();
+    #  u-boot-1     0.....   282.101375: funcgraph_entry:        0.000 us   |    event_init();
 
     expected_indent = None
     found_start = False
@@ -224,8 +224,8 @@
                 found_end = True
 
     # The next function after initf_bootstage() exits should be
-    # initcall_is_event()
-    assert upto == 'calc_reloc_ofs()'
+    # event_init()
+    assert upto == 'event_init()'
 
     # Now look for initf_dm() and dm_timer_init() so we can check the bootstage
     # time
@@ -274,7 +274,7 @@
     # We expect dm_timer_init() to be called twice: once before relocation and
     # once after
     look1 = 'initf_dm;dm_timer_init 1'
-    look2 = 'board_init_r;initcall_run_list;initr_dm_devices;dm_timer_init 1'
+    look2 = 'board_init_r;initcall_run_r;initr_dm_devices;dm_timer_init 1'
     found = 0
     with open(trace_fg, 'r') as fd:
         for line in fd: