fix(pie): align fixup_gdt_reloc() for aarch64

Do not skip upper limit address (__RW_END__) during relocation process.
This align the code on what is done for AARCH32.

Change-Id: I236368376276c2d3aa79adce13ca49f4023ce369
Signed-off-by: Yann Gautier <yann.gautier@st.com>
diff --git a/lib/aarch64/misc_helpers.S b/lib/aarch64/misc_helpers.S
index 6e4d1fc..01531ca 100644
--- a/lib/aarch64/misc_helpers.S
+++ b/lib/aarch64/misc_helpers.S
@@ -532,9 +532,9 @@
 	cmp	x3, x6
 	b.lo	2f
 
-	/* Skip adding offset if address is >= upper limit */
+	/* Skip adding offset if address is > upper limit */
 	cmp	x3, x7
-	b.hs	2f
+	b.hi	2f
 	add	x3, x3, x0
 	str	x3, [x1]
 
@@ -582,9 +582,9 @@
 	cmp	x4, x6
 	b.lo	2f
 
-	/* Skip adding offset if r_addend entry is >= upper limit */
+	/* Skip adding offset if r_addend entry is > upper limit */
 	cmp	x4, x7
-	b.hs	2f
+	b.hi	2f
 
 	add	x4, x0, x4	/* Diff(S) + r_addend */
 	str	x4, [x3]