ARM: configs: keystone: Enable TIECAP PWM driver

Enable PWM_TIECAP driver to support ECAP IP present in 66AK2G SoC.
Signed-off-by: NVignesh R <vigneshr@ti.com>
Signed-off-by: NSantosh Shilimkar <ssantosh@kernel.org>

arch/arm/configs/keystone_defconfig

@@ -189,6 +189,8 @@ CONFIG_KEYSTONE_NAVIGATOR_DMA=y
 CONFIG_TI_SCI_PM_DOMAINS=y
 CONFIG_MEMORY=y
 CONFIG_TI_AEMIF=y
+CONFIG_PWM=y
+CONFIG_PWM_TIECAP=m
 CONFIG_KEYSTONE_IRQ=y
 CONFIG_RESET_TI_SCI=m
 CONFIG_RESET_TI_SYSCON=m