arm: am43xx: enable spi clock

Add spi clock to the list of am43xx basic clocks to make the SPI
subsystem available on am43xx systems.

Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Reviewed-by: Jagan Teki <jteki@openedev.com>

arch/arm/cpu/armv7/am33xx/clock_am43xx.c

@@ -115,6 +115,7 @@ void enable_basic_clocks(void)
 		&cmper->usbphyocp2scp0clkctrl,
 		&cmper->usb1clkctrl,
 		&cmper->usbphyocp2scp1clkctrl,
+		&cmper->spi0clkctrl,
 		0
 	};