“Those who come here already lost everything, and they don’t want to lose anything more.” Mexican immigrant Carlos Martinez says this in the teaser for Telemundo’s new telenovela, “Bajo El Mismo Cielo.” Gabriel Porras (“¿Dónde Está Elisa?,” “El Señor de los Cielos”) portrays Carlos, a hardworking Los Angeles landscaper who crossed the border illegally several years ago in search of a better life for his family. But after the death of his wife, Carlos struggles to raise his sons with the same values he was taught as they grow up in the United States with a new culture and new obstacles to take on.