kmp204x: add workaround for A-004849

This should prevent the problems that the CCF can deadlock with certain
traffic patterns.

This also fixes the workaround for A-006559 that was not correctly
implemented before.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>

board/keymile/kmp204x/pbi.cfg

@@ -8,16 +8,47 @@
 #
 
 #PBI commands
-#Workaround for A-006559 needed for rev 2.0 of P2041 silicon
-#Freescale's errarta sheet suggests it may be done with PBI
+#Configure ALTCBAR for DCSR -> DCSR@89000000
+091380c0 000009C4
 09000010 00000000
+091380c0 000009C4
 09000014 00000000
+091380c0 000009C4
 09000018 81d00000
-09021008 0000f000
-09021028 0000f000
-09021048 0000f000
-09021068 0000f000
+#Workaround for A-004849
+091380c0 000009C4
+890B0050 00000002
+091380c0 000009C4
+890B0054 00000002
+091380c0 000009C4
+890B0058 00000002
+091380c0 000009C4
+890B005C 00000002
+091380c0 000009C4
+890B0090 00000002
+091380c0 000009C4
+890B0094 00000002
+091380c0 000009C4
+890B0098 00000002
+091380c0 000009C4
+890B009C 00000002
+091380c0 000009C4
+890B0108 00000012
+091380c0 000009C4
+#Workaround for A-006559 needed for rev 2.0 of P2041 silicon
+89021008 0000f000
+091380c0 000009C4
+89021028 0000f000
+091380c0 000009C4
+89021048 0000f000
+091380c0 000009C4
+89021068 0000f000
+091380c0 000009C4
+#Flush PBL data
+09138000 00000000
+#Disable ALTCBAR
 09000018 00000000
+091380c0 000009C4
 #Initialize CPC1 as 1MB SRAM
 09010000 00200400
 09138000 00000000