fix(plat/marvell/a3k): update information about PCIe abort hack

A3700 plat_ea_handler was introduced into TF-A codebase just because of
bugs in U-Boot and Linux kernel PCIe controller driver pci-aardvark.c.

These bugs were finally fixed in both U-Boot and Linux kernel drivers:

Add all these information into comments, including printing error
message into a3k plat_ea_handler. Also check that abort is really
asynchronous and comes from lower level than EL3.

Signed-off-by: Pali Rohár <>
Change-Id: I46318d221b39773d5e25b3a0221d7738736ffdf1
1 file changed