media: nxp: imx8-isi: Replace udelay() with fsleep()

The ISI driver uses udelay() to wait for 300µs in a context where it can
sleep. Use fsleep() instead.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/nxp/imx8-isi/imx8-isi-hw.c

@@ -86,7 +86,8 @@ void mxc_isi_channel_m2m_start(struct mxc_isi_pipe *pipe)
 	val = mxc_isi_read(pipe, CHNL_MEM_RD_CTRL);
 	val &= ~CHNL_MEM_RD_CTRL_READ_MEM;
 	mxc_isi_write(pipe, CHNL_MEM_RD_CTRL, val);
-	udelay(300);
+
+	fsleep(300);
 
 	val |= CHNL_MEM_RD_CTRL_READ_MEM;
 	mxc_isi_write(pipe, CHNL_MEM_RD_CTRL, val);