[PATCH] ARM: pxa: balloon3: Fix build error

Axel Lin [off-list ref] writes:

irq_data_get_chip() function does not exist, call irq_desc_get_chip()
instead.

Fixes: 9ec97561aa6d ("ARM/pxa: Prepare balloon3_irq_handler for irq argument removal")
Signed-off-by: Axel Lin <redacted>

I'll take that through pxa/fixes, thanks.

Cheers.

--
Robert