refactor(qemu): change all occurrences of RSS to RSE

Changes all occurrences of "RSS" and "rss" in the code and build files
to "RSE" and "rse".

Signed-off-by: Tamas Ban <tamas.ban@arm.com>
Change-Id: I2c6840f6f3f2f8f64595a0e0aa6e12084a37ce6e
2 files changed