treewide: use linux/time.h for time conversion defines

Now that we have time conversion defines from in time.h there is no need
for each driver to define their own version.

Signed-off-by: Igor Prusov <ivprusov@salutedevices.com>
Reviewed-by: Svyatoslav Ryhel <clamor95@gmail.com> # tegra
Reviewed-by: Eugen Hristev <eugen.hristev@collabora.com> #at91
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org> #qcom geni
Reviewed-by: Stefan Bosch <stefan_b@posteo.net> #nanopi2
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
diff --git a/drivers/pwm/pwm-aspeed.c b/drivers/pwm/pwm-aspeed.c
index ba98641..b03472d 100644
--- a/drivers/pwm/pwm-aspeed.c
+++ b/drivers/pwm/pwm-aspeed.c
@@ -49,6 +49,7 @@
 #include <dm/device_compat.h>
 #include <linux/math64.h>
 #include <linux/bitfield.h>
+#include <linux/time.h>
 #include <asm/io.h>
 
 /* The channel number of Aspeed pwm controller */
@@ -77,8 +78,6 @@
 /* PWM fixed value */
 #define PWM_ASPEED_FIXED_PERIOD 0xff
 
-#define NSEC_PER_SEC			1000000000L
-
 struct aspeed_pwm_priv {
 	struct clk clk;
 	struct regmap *regmap;
diff --git a/drivers/pwm/pwm-at91.c b/drivers/pwm/pwm-at91.c
index 95597aee..3ff1fb6 100644
--- a/drivers/pwm/pwm-at91.c
+++ b/drivers/pwm/pwm-at91.c
@@ -14,11 +14,11 @@
 #include <dm.h>
 #include <linux/bitops.h>
 #include <linux/io.h>
+#include <linux/time.h>
 #include <pwm.h>
 
 #define PERIOD_BITS 16
 #define PWM_MAX_PRES 10
-#define NSEC_PER_SEC 1000000000L
 
 #define PWM_ENA 0x04
 #define PWM_CHANNEL_OFFSET 0x20
diff --git a/drivers/pwm/pwm-cadence-ttc.c b/drivers/pwm/pwm-cadence-ttc.c
index dc3b314..d9f6736 100644
--- a/drivers/pwm/pwm-cadence-ttc.c
+++ b/drivers/pwm/pwm-cadence-ttc.c
@@ -17,6 +17,7 @@
 #include <linux/bitfield.h>
 #include <linux/math64.h>
 #include <linux/log2.h>
+#include <linux/time.h>
 #include <dm/device_compat.h>
 
 #define CLOCK_CONTROL		0
@@ -37,8 +38,6 @@
 #define COUNTER_INTERVAL_ENABLE		BIT(1)
 #define COUNTER_COUNTING_DISABLE	BIT(0)
 
-#define NSEC_PER_SEC	1000000000L
-
 #define TTC_REG(reg, channel) ((reg) + (channel) * sizeof(u32))
 #define TTC_CLOCK_CONTROL(reg, channel) \
 	TTC_REG((reg) + CLOCK_CONTROL, (channel))
diff --git a/drivers/pwm/pwm-meson.c b/drivers/pwm/pwm-meson.c
index 2311910..6095972 100644
--- a/drivers/pwm/pwm-meson.c
+++ b/drivers/pwm/pwm-meson.c
@@ -26,8 +26,7 @@
 #include <linux/math64.h>
 #include <linux/bitfield.h>
 #include <linux/clk-provider.h>
-
-#define NSEC_PER_SEC 1000000000L
+#include <linux/time.h>
 
 #define REG_PWM_A		0x0
 #define REG_PWM_B		0x4
diff --git a/drivers/pwm/pwm-mtk.c b/drivers/pwm/pwm-mtk.c
index 11e7444..ad845ed 100644
--- a/drivers/pwm/pwm-mtk.c
+++ b/drivers/pwm/pwm-mtk.c
@@ -12,6 +12,7 @@
 #include <div64.h>
 #include <linux/bitops.h>
 #include <linux/io.h>
+#include <linux/time.h>
 
 /* PWM registers and bits definitions */
 #define PWMCON			0x00
@@ -27,8 +28,6 @@
 #define PWM_CLK_DIV_MAX		7
 #define MAX_PWM_NUM		8
 
-#define NSEC_PER_SEC 1000000000L
-
 enum mtk_pwm_reg_ver {
 	PWM_REG_V1,
 	PWM_REG_V2,
diff --git a/drivers/pwm/pwm-ti-ehrpwm.c b/drivers/pwm/pwm-ti-ehrpwm.c
index f099145..fefa3c6 100644
--- a/drivers/pwm/pwm-ti-ehrpwm.c
+++ b/drivers/pwm/pwm-ti-ehrpwm.c
@@ -14,8 +14,7 @@
 #include <dm/device_compat.h>
 #include <pwm.h>
 #include <asm/io.h>
-
-#define NSEC_PER_SEC			        1000000000L
+#include <linux/time.h>
 
 /* Time base module registers */
 #define TI_EHRPWM_TBCTL				0x00