Add Sascha Hauer to .mailmap

This fixes the shortlog attribution e.g. for 106757b38fff

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

authored by Uwe Kleine-König and committed by Linus Torvalds bcee402e 6d7f2caa

+1
+1
.mailmap
··· 92 92 Rui Saraiva <rmps@joel.ist.utl.pt> 93 93 Sachin P Sant <ssant@in.ibm.com> 94 94 Sam Ravnborg <sam@mars.ravnborg.org> 95 + Sascha Hauer <s.hauer@pengutronix.de> 95 96 S.Çağlar Onur <caglar@pardus.org.tr> 96 97 Simon Kelley <simon@thekelleys.org.uk> 97 98 Stéphane Witzmann <stephane.witzmann@ubpmes.univ-bpclermont.fr>