Platform: Fix wrong binary address in NOBL2 case on Musca-B1/S1

The address of the non-secure binary on the Musca-B1 and S1 boards in
case of a build without BL2 was incorrect in the documentation and the
flash layout header. This patch fixes that.

Signed-off-by: Balint Matyi <Balint.Matyi@arm.com>
Change-Id: I8bb3aedf6e98ec4c3d62a27b1678b99194e11fea
diff --git a/docs/getting_started/tfm_user_guide.rst b/docs/getting_started/tfm_user_guide.rst
index eaf33f6..c9430bd 100644
--- a/docs/getting_started/tfm_user_guide.rst
+++ b/docs/getting_started/tfm_user_guide.rst
@@ -314,11 +314,11 @@
 
 - Windows::
 
-    srec_cat.exe install\outputs\MUSCA_B1\tfm_s.bin -Binary -offset 0xA000000 install\outputs\MUSCA_B1\tfm_ns.bin -Binary -offset 0xA060000 -o tfm.hex -Intel
+    srec_cat.exe install\outputs\MUSCA_B1\tfm_s.bin -Binary -offset 0xA000000 install\outputs\MUSCA_B1\tfm_ns.bin -Binary -offset 0xA080000 -o tfm.hex -Intel
 
 - Linux::
 
-    srec_cat install/outputs/MUSCA_B1/tfm_s.bin -Binary -offset 0xA000000 install/outputs/MUSCA_B1/tfm_ns.bin -Binary -offset 0xA060000 -o tfm.hex -Intel
+    srec_cat install/outputs/MUSCA_B1/tfm_s.bin -Binary -offset 0xA000000 install/outputs/MUSCA_B1/tfm_ns.bin -Binary -offset 0xA080000 -o tfm.hex -Intel
 
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 Execute TF-M example and regression tests on MPS3 boards