MAINTAINERS: step down as TJA11XX C45 maintainer

I am stepping down as TJA11XX C45 maintainer.
Andrei Botila will take the responsibility to maintain and improve the
support for TJA11XX C45 PHYs.

Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@oss.nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Author: Radu Pirea (NXP OSS)

MAINTAINERS

@@ -15424,7 +15424,7 @@ F:	Documentation/devicetree/bindings/net/bluetooth/nxp,88w8987-bt.yaml
 F:	drivers/bluetooth/btnxpuart.c
 
 NXP C45 TJA11XX PHY DRIVER
-M:	Radu Pirea <radu-nicolae.pirea@oss.nxp.com>
+M:	Andrei Botila <andrei.botila@oss.nxp.com>
 L:	netdev@vger.kernel.org
 S:	Maintained
 F:	drivers/net/phy/nxp-c45-tja11xx.c