Documentation: arm: remove hyphen from BG2Q in Marvell Berlin docs

The chip's design name isn't hyphenated anywhere else, and none of the
other names in the same document are hyphenated.
Signed-off-by: Thomas Hebb <tommyhebb@gmail.com>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/arm/Marvell/README

@@ -251,7 +251,7 @@ Berlin family (Multimedia Solutions)
 		Homepage:	http://www.marvell.com/multimedia-solutions/armada-1500/
 		Product Brief:	http://www.marvell.com/multimedia-solutions/armada-1500/assets/Marvell-ARMADA-1500-Product-Brief.pdf
 	88DE3114, Armada 1500 Pro
-		Design name:	BG2-Q
+		Design name:	BG2Q
 		Core:		Quad Core ARM Cortex-A9, PL310 L2CC
 		Homepage:	http://www.marvell.com/multimedia-solutions/armada-1500-pro/
 		Product Brief:	http://www.marvell.com/multimedia-solutions/armada-1500-pro/assets/Marvell_ARMADA_1500_PRO-01_product_brief.pdf