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The use of end addresses is preferred over the size of sections.
This was done for some AARCH64 files for PIE with commit [1],
and some extra explanations can be found in its commit message.
Align the missing AARCH64 files.

For AARCH32 files, this is required to prepare PIE support introduction.

 [1] f1722b69

 ("PIE: Use PC relative adrp/adr for symbol reference")

Change-Id: I8f1c06580182b10c680310850f72904e58a54d7d
Signed-off-by: Yann Gautier <yann.gautier@st.com>