t104xrdb: Add Errata A_007662, A_008007 workaround in pbi.cfg

-A_007662 states that for x1 link width, PCIe2 controller trains in
 Gen1 speed while configured for Gen2 speed.
 Workaround:Set the width to x1 and speed to Gen2 by writing to
 CCSR registers in PBI phase

-A_008007 states that PVR register may show random value.
 Workaround: Reset PVR register using DCSR space in PBI phase

Add PBI based software workaround for A_007662 and A_008007
in t104x_pbi.cfg. This is required for SPL-based bootloaders
like NAND-boot, SD-boot, SPI-boot
Signed-off-by: NPriyanka Jain <Priyanka.Jain@freescale.com>
Reviewed-by: NYork Sun <yorksun@freescale.com>

board/freescale/t104xrdb/t104x_pbi.cfg

 #PBI commands
+#Software Workaround for errata A-007662 to train PCIe2 controller in Gen2 speed
+09250100 00000400
+09250108 00002000
+#Software Workaround for errata A-008007 to reset PVR register
+09000010 0000000b
+09000014 c0000000
+09000018 81d00017
+89020400 a1000000
+091380c0 000f0000
+89020400 00000000
 #Initialize CPC1
 09010000 00200400
 09138000 00000000