MAINTAINERS: Fix AMD PTDMA DRIVER entry

Remove the bogus leading plus signs from the entry for the AMD PTDMA
driver.

Fixes: fa5d823 ("dmaengine: ptdma: Initial driver for the AMD PTDMA")
Signed-off-by: Geert Uytterhoeven <[email protected]>
Link: https://lore.kernel.org/r/28b7663ebcaf9363324a615129417b24625a7038.1630413650.git.geert+renesas@glider.be
Signed-off-by: Vinod Koul <[email protected]>

Author: geertu

MAINTAINERS

@@ -979,11 +979,11 @@ S:	Supported
 T:	git https://gitlab.freedesktop.org/agd5f/linux.git
 F:	drivers/gpu/drm/amd/pm/powerplay/
 
-+AMD PTDMA DRIVER
-+M:	Sanjay R Mehta <[email protected]>
-+L:	[email protected]
-+S:	Maintained
-+F:	drivers/dma/ptdma/
+AMD PTDMA DRIVER
+M:	Sanjay R Mehta <[email protected]>
+L:	[email protected]
+S:	Maintained
+F:	drivers/dma/ptdma/
 
 AMD SEATTLE DEVICE TREE SUPPORT
 M:	Brijesh Singh <[email protected]>