tf_printf: Return number of printed characters
The C standard says that printf() has to return the number of characters
it has printed.

Change-Id: I0ef50b1d6766d140724ac0a2fa2c5d023431f984
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
1 parent 93c78ed commit cb6dbfe3dc56088895c06b0492cfce289288444e
@Antonio Nino Diaz Antonio Nino Diaz authored on 15 Aug 2018
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common/tf_printf.c
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include/common/debug.h