freescale: Tweak various Makefiles to remove redundancy, fix aesthetics

No intended functional change, just remove redundancies in some
Makefiles, and make whitespace aesthetics uniform.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Reviewed-by: York Sun <york.sun@nxp.com>
diff --git a/board/freescale/p2041rdb/Makefile b/board/freescale/p2041rdb/Makefile
index c74f4c6..a335ec6 100644
--- a/board/freescale/p2041rdb/Makefile
+++ b/board/freescale/p2041rdb/Makefile
@@ -7,6 +7,6 @@
 #
 
 obj-y	+= p2041rdb.o
-obj-y += cpld.o
+obj-y	+= cpld.o
 obj-y	+= ddr.o
 obj-y	+= eth.o