Fix some violations to MISRA rule 8.3

Wherever we use 'struct foo' and 'foo_t' interchangeably in a
function's declaration and definition, use 'struct foo' consistently
for both, as per the TF-A coding guidelines [1].

[1] https://github.com/ARM-software/arm-trusted-firmware/wiki/ARM-Trusted-Firmware-Coding-Guidelines#avoid-anonymous-typedefs-of-structsenums-in-header-files

Change-Id: I7998eb24a26746e87e9b6425529926406745b721
Signed-off-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
diff --git a/plat/common/plat_bl1_common.c b/plat/common/plat_bl1_common.c
index c5bbe74..6777979 100644
--- a/plat/common/plat_bl1_common.c
+++ b/plat/common/plat_bl1_common.c
@@ -34,7 +34,7 @@
 }
 
 void bl1_plat_set_ep_info(unsigned int image_id,
-		entry_point_info_t *ep_info)
+		struct entry_point_info *ep_info)
 {
 
 }
@@ -48,7 +48,7 @@
  * Following is the default definition that always
  * returns BL2 image details.
  */
-image_desc_t *bl1_plat_get_image_desc(unsigned int image_id)
+struct image_desc *bl1_plat_get_image_desc(unsigned int image_id)
 {
 	static image_desc_t bl2_img_desc = BL2_IMAGE_DESC;
 	return &bl2_img_desc;