Correct typographical errors

Corrects typos in core code, documentation files, drivers, Arm
platforms and services.

None of the corrections affect code; changes are limited to comments
and other documentation.

Change-Id: I5c1027b06ef149864f315ccc0ea473e2a16bfd1d
Signed-off-by: Paul Beesley <paul.beesley@arm.com>
diff --git a/lib/el3_runtime/aarch64/context_mgmt.c b/lib/el3_runtime/aarch64/context_mgmt.c
index 8a5764c..b956491 100644
--- a/lib/el3_runtime/aarch64/context_mgmt.c
+++ b/lib/el3_runtime/aarch64/context_mgmt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -55,7 +55,7 @@
  * The security state to initialize is determined by the SECURE attribute
  * of the entry_point_info.
  *
- * The EE and ST attributes are used to configure the endianess and secure
+ * The EE and ST attributes are used to configure the endianness and secure
  * timer availability for the new execution context.
  *
  * To prepare the register state for entry call cm_prepare_el3_exit() and
@@ -124,7 +124,7 @@
 
 #ifdef IMAGE_BL31
 	/*
-	 * SCR_EL3.IRQ, SCR_EL3.FIQ: Enable the physical FIQ and IRQ rounting as
+	 * SCR_EL3.IRQ, SCR_EL3.FIQ: Enable the physical FIQ and IRQ routing as
 	 *  indicated by the interrupt routing model for BL31.
 	 */
 	scr_el3 |= get_scr_el3_from_routing_model(security_state);
@@ -175,7 +175,7 @@
 
 	/*
 	 * Store the initialised SCTLR_EL1 value in the cpu_context - SCTLR_EL2
-	 * and other EL2 registers are set up by cm_preapre_ns_entry() as they
+	 * and other EL2 registers are set up by cm_prepare_ns_entry() as they
 	 * are not part of the stored cpu_context.
 	 */
 	write_ctx_reg(get_sysregs_ctx(ctx), CTX_SCTLR_EL1, sctlr_elx);
@@ -350,7 +350,7 @@
 					| CPTR_EL2_TFP_BIT));
 
 			/*
-			 * Initiliase CNTHCTL_EL2. All fields are
+			 * Initialise CNTHCTL_EL2. All fields are
 			 * architecturally UNKNOWN on reset and are set to zero
 			 * except for field(s) listed below.
 			 *