Remove dashes from image names: 'BL3-x' --> 'BL3x'

This patch removes the dash character from the image name, to
follow the image terminology in the Trusted Firmware Wiki page:

    https://github.com/ARM-software/arm-trusted-firmware/wiki

Changes apply to output messages, comments and documentation.

non-ARM platform files have been left unmodified.

Change-Id: Ic2a99be4ed929d52afbeb27ac765ceffce46ed76
diff --git a/include/plat/common/common_def.h b/include/plat/common/common_def.h
index 4175b14..744c22e 100644
--- a/include/plat/common/common_def.h
+++ b/include/plat/common/common_def.h
@@ -55,7 +55,7 @@
  * avoid subtle integer overflow errors due to implicit integer type promotion
  * when working with 32-bit values.
  *
- * The TSP linker script includes some of these definitions to define the BL3-2
+ * The TSP linker script includes some of these definitions to define the BL32
  * memory map, but the GNU LD does not support the 'ull' suffix, causing the
  * build process to fail. To solve this problem, the auxiliary macro MAKE_ULL(x)
  * will add the 'ull' suffix only when the macro __LINKER__  is not defined