[media] c8sectpfe: Remove clk_disable_unprepare hacks

Now that CLK_PROC_STFE is defined as a critical clock in
DT, we can remove the commented clk_disable_unprepare from
the c8sectpfe driver. This means we now have balanced
clk*enable/disable calls in the driver, but on STiH407
family the clock in reality will never actually be disabled.

This is due to a HW bug where once the IP has been configured
and the SLIM core is running, disabling the clock causes a
unrecoverable bus lockup.

Signed-off-by: Peter Griffin <[e-mail]>
Acked-by: Patrice Chotard <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c

···
 	return 0;
 
 err_clk_disable:
-	/* TODO uncomment when upstream has taken a reference on this clk */
-	/*clk_disable_unprepare(fei->c8sectpfeclk);*/
+	clk_disable_unprepare(fei->c8sectpfeclk);
 	return ret;
 }
 
···
 	if (readl(fei->io + SYS_OTHER_CLKEN))
 		writel(0, fei->io + SYS_OTHER_CLKEN);
 
-	/* TODO uncomment when upstream has taken a reference on this clk */
-	/*
 	if (fei->c8sectpfeclk)
 		clk_disable_unprepare(fei->c8sectpfeclk);
-	*/
 
 	return 0;
 }