MAINTAINERS: Fix AMD PTDMA DRIVER entry

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

Fixes: fa5d823b ("dmaengine: ptdma: Initial driver for the AMD PTDMA")
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/28b7663ebcaf9363324a615129417b24625a7038.1630413650.git.geert+renesas@glider.beSigned-off-by: NVinod Koul <vkoul@kernel.org>

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 <sanju.mehta@amd.com>
-+L:	dmaengine@vger.kernel.org
-+S:	Maintained
-+F:	drivers/dma/ptdma/
+AMD PTDMA DRIVER
+M:	Sanjay R Mehta <sanju.mehta@amd.com>
+L:	dmaengine@vger.kernel.org
+S:	Maintained
+F:	drivers/dma/ptdma/
 
 AMD SEATTLE DEVICE TREE SUPPORT
 M:	Brijesh Singh <brijeshkumar.singh@amd.com>