genpd: move owl-sps-helper.c from drivers/soc

Moving only one of the two files in drivers/soc/actions to drivers/genpd
caused a link failure in allmodconfig, as drivers/genpd is entered
for compile testing, but drivers/soc/actions accidentally got skipped:

x86_64-linux-gnu-ld: vmlinux.o: in function `owl_sps_set_power':
owl-sps.c:(.text+0x16e259d): undefined reference to `owl_sps_set_pg'

Move the other one as well to allow build testing to work correctly.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

drivers/genpd/actions/Makefile

 # SPDX-License-Identifier: GPL-2.0+
+obj-$(CONFIG_OWL_PM_DOMAINS_HELPER)	+= owl-sps-helper.o
 obj-$(CONFIG_OWL_PM_DOMAINS)		+= owl-sps.o

drivers/soc/Makefile

@@ -3,7 +3,6 @@
 # Makefile for the Linux Kernel SOC specific device drivers.
 #
 
-obj-$(CONFIG_ARCH_ACTIONS)	+= actions/
 obj-y				+= apple/
 obj-y				+= aspeed/
 obj-$(CONFIG_ARCH_AT91)		+= atmel/

drivers/soc/actions/Makefile

-# SPDX-License-Identifier: GPL-2.0+
-
-obj-$(CONFIG_OWL_PM_DOMAINS_HELPER) += owl-sps-helper.o