arm: mach-snapdragon: refactor clock driver

In preparation to add support for the Dragonboard820c (APQ8096),
refactor the current Snapdragon clock driver.

No new functionality has been added.

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
diff --git a/arch/arm/mach-snapdragon/Makefile b/arch/arm/mach-snapdragon/Makefile
index d82a04d..d798b82 100644
--- a/arch/arm/mach-snapdragon/Makefile
+++ b/arch/arm/mach-snapdragon/Makefile
@@ -4,5 +4,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-obj-y += clock-apq8016.o
-obj-y += sysmap-apq8016.o
+obj-$(CONFIG_TARGET_DRAGONBOARD410C) += clock-apq8016.o
+obj-$(CONFIG_TARGET_DRAGONBOARD410C) += sysmap-apq8016.o
+obj-y += clock-snapdragon.o