mailmap: update Pratyush Yadav's email address

I will stop having access to my Amazon email soon. Map it to my kernel
email.

Signed-off-by: Pratyush Yadav <pratyush@kernel.org>

Author: prati0100

.mailmap

@@ -632,6 +632,7 @@ Peter Oruba <peter.oruba@amd.com>
 Peter Oruba <peter@oruba.de>
 Pierre-Louis Bossart <pierre-louis.bossart@linux.dev> <pierre-louis.bossart@linux.intel.com>
 Pratyush Anand <pratyush.anand@gmail.com> <pratyush.anand@st.com>
+Pratyush Yadav <pratyush@kernel.org> <ptyadav@amazon.de>
 Praveen BP <praveenbp@ti.com>
 Pradeep Kumar Chitrapu <quic_pradeepc@quicinc.com> <pradeepc@codeaurora.org>
 Prasad Sodagudi <quic_psodagud@quicinc.com> <psodagud@codeaurora.org>