qcs405: Add Timer support

Init frequency to 19.2 MHz

TEST=build

Change-Id: I566c7ff2b7085c9dd89ea74a08f3ba862feab2ab
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Nitheesh Sekar <nsekar@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/29952
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/soc/qualcomm/qcs405/Kconfig

@@ -10,6 +10,7 @@ config SOC_QUALCOMM_QCS405
 	select GENERIC_GPIO_LIB
 	select GENERIC_UDELAY
 	select HAVE_MONOTONIC_TIMER
+	select ARM64_USE_ARCH_TIMER
 
 if SOC_QUALCOMM_QCS405
 

src/soc/qualcomm/qcs405/timer.c

@@ -13,15 +13,11 @@
  * GNU General Public License for more details.
  */
 
-#include <timer.h>
 #include <delay.h>
-
-void timer_monotonic_get(struct mono_time *mt)
-{
-
-}
+#include <arch/lib_helpers.h>
+#include <commonlib/helpers.h>
 
 void init_timer(void)
 {
-
+	raw_write_cntfrq_el0(19200*KHz);
 }