mfd: da9052-irq: Fix trivial 'space before comma' error

ERROR: space prohibited before that ',' (ctx:WxW)
+       da9052_free_irq(da9052, DA9052_IRQ_ADC_EOM , da9052);

total: 1 errors, 0 warnings, 290 lines checked

Cc: Support Opensource <support.opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>