CONFIG_MXC_PWM is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Enable PWM driver
modulename: pwm.ko
configname: CONFIG_MXC_PWM
Linux Kernel Configuration
└─>Enable PWM driver
In linux kernel since version 2.6.30 (release Date: 2009-06-09)
Enable support for the i.MX PWM controller(s).