revert(rambus-trng): remove ip-76 driver

The Rambus TRNG IP-76 driver was ported from Linux kernel (omap-rng.c),
which was initially licensed under GPL-2.0. In term of the license
violation, remove

revert(rambus-trng): remove ip-76 driver

The Rambus TRNG IP-76 driver was ported from Linux kernel (omap-rng.c),
which was initially licensed under GPL-2.0. In term of the license
violation, remove this driver and the related SMC call that originally
added by the following two commits:

commit 57660d9d7945 ("plat/marvell/armada/a8k: support HW RNG by SMC")
commit 6aa9f5d164e8 ("drivers/rambus: add TRNG-IP-76 driver")

Change-Id: Id8c99db2e51b49623b3b034106c989a46f690b60
Signed-off-by: Wilson Ding <dingwei@marvell.com>

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drivers/marvell: check if TRNG unit is present

Some Marvell SoCs may have crypto engine disabled in the HW.
This patch checks the AP LD0 efuse for crypto engine/TRNG
presence before initializing the

drivers/marvell: check if TRNG unit is present

Some Marvell SoCs may have crypto engine disabled in the HW.
This patch checks the AP LD0 efuse for crypto engine/TRNG
presence before initializing the driver.

Change-Id: I441e7c69a137106bd36302b028b04c0b31896dbd
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/boot/atf/+/47314
Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Yi Guo <yi.guo@cavium.com>

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