pwm: tipwmss: Enable on TI DRA7x and AM437x

TIPWMSS is present on TI's DRA7x and AM437x SoCs. Enable its usage.

Instead of adding each SoC individually, use the more generic symbol
ARCH_OMAP2PLUS instead.
Signed-off-by: NVignesh R <vigneshr@ti.com>
Signed-off-by: NSekhar Nori <nsekhar@ti.com>
Signed-off-by: NThierry Reding <thierry.reding@gmail.com>

drivers/pwm/Kconfig

@@ -368,7 +368,7 @@ config PWM_TEGRA
 
 config  PWM_TIECAP
 	tristate "ECAP PWM support"
-	depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
+	depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX
 	help
 	  PWM driver support for the ECAP APWM controller found on AM33XX
 	  TI SOC
@@ -378,7 +378,7 @@ config  PWM_TIECAP
 
 config  PWM_TIEHRPWM
 	tristate "EHRPWM PWM support"
-	depends on SOC_AM33XX || ARCH_DAVINCI_DA8XX
+	depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX
 	help
 	  PWM driver support for the EHRPWM controller found on AM33XX
 	  TI SOC
@@ -388,7 +388,7 @@ config  PWM_TIEHRPWM
 
 config  PWM_TIPWMSS
 	bool
-	default y if SOC_AM33XX && (PWM_TIECAP || PWM_TIEHRPWM)
+	default y if (ARCH_OMAP2PLUS) && (PWM_TIECAP || PWM_TIEHRPWM)
 	help
 	  PWM Subsystem driver support for AM33xx SOC.