soc: ti: knav_qmss_queue: makefile tweak to build as dynamic module

Currently configuring qmss and dma as dynamic module creates three .ko
files. knav_qmss_acc.ko and knav_qmss_queue.ko both can't be insmod
because of circular dependency. So combine these two into one module
by changing the makefile.
Signed-off-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>

drivers/soc/ti/Makefile

 #
 # TI Keystone SOC drivers
 #
-obj-$(CONFIG_KEYSTONE_NAVIGATOR_QMSS)	+= knav_qmss_queue.o knav_qmss_acc.o
+obj-$(CONFIG_KEYSTONE_NAVIGATOR_QMSS)	+= knav_qmss.o
+knav_qmss-y := knav_qmss_queue.o knav_qmss_acc.o
 obj-$(CONFIG_KEYSTONE_NAVIGATOR_DMA)	+= knav_dma.o