Update Arm TF references to TF-A

Update Arm Trusted Firmware references in the upstream documents to
Trusted Firmware-A (TF-A). This is for consistency with and
disambiguation from Trusted Firmware-M (TF-M).

Also update other Arm trademarks, e.g. ARM->Arm, ARMv8->Armv8-A.

Change-Id: I8bb0e18af29c6744eeea2dc6c08f2c10b20ede22
Signed-off-by: Dan Handley <dan.handley@arm.com>
Signed-off-by: David Cunado <david.cunado@arm.com>
diff --git a/docs/plat/qemu.rst b/docs/plat/qemu.rst
index 4e2cd7c..57ed629 100644
--- a/docs/plat/qemu.rst
+++ b/docs/plat/qemu.rst
@@ -1,8 +1,8 @@
-ARM Trusted Firmware for QEMU virt ARMv8-A
-==========================================
+Trusted Firmware-A for QEMU virt Armv8-A
+========================================
 
-ARM Trusted Firmware implements the EL3 firmware layer for QEMU virt
-ARMv8-A. BL1 is used as the BootROM, supplied with the -bios argument.
+Trusted Firmware-A (TF-A) implements the EL3 firmware layer for QEMU virt
+Armv8-A. BL1 is used as the BootROM, supplied with the -bios argument.
 When QEMU starts all CPUs are released simultaneously, BL1 selects a
 primary CPU to handle the boot and the secondaries are placed in a polling
 loop to be released by normal world via PSCI.
@@ -10,7 +10,7 @@
 BL2 edits the Flattened Device Tree, FDT, generated by QEMU at run-time to
 add a node describing PSCI and also enable methods for the CPUs.
 
-An ARM64 defonfig v4.5 Linux kernel is known to boot, FTD doesn't need to be
+An ARM64 defconfig v4.5 Linux kernel is known to boot, FDT doesn't need to be
 provided as it's generated by QEMU.
 
 Current limitations: