arm: socfpga: Drop cyclone5 suffix from board file name

Drop the _cyclone5 suffix from socfpga_cyclone5.c since this file
will contain Arria 5 support as well.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@opensource.altera.com>
Acked-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Acked-by: Pavel Machek <pavel@denx.de>
Reviewed-by: Stefan Roese <sr@denx.de>
Cc: Vince Bridgers <vbridger@opensource.altera.com>

board/altera/socfpga/Makefile

@@ -6,5 +6,5 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y	:= socfpga_cyclone5.o
+obj-y	:= socfpga.o
 obj-$(CONFIG_SPL_BUILD) += pinmux_config.o iocsr_config.o