PM / devfreq: imx8m-ddrc: Remove unused defines

The IMX_SIP_DDR_DVFS_WAIT_CHANGE and IMX_SIP_DDR_FREQ_SET_HIGH defines
are not used so they can be removed.

Fixes: 518e99e2a22e ("PM / devfreq: Add dynamic scaling for imx8m ddr controller")
Reported-by: Shawn Guo <shawn.guo@kernel.org>
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>

drivers/devfreq/imx8m-ddrc.c

@@ -15,12 +15,6 @@
 
 #define IMX_SIP_DDR_DVFS			0xc2000004
 
-/* Values starting from 0 switch to specific frequency */
-#define IMX_SIP_DDR_FREQ_SET_HIGH		0x00
-
-/* Deprecated after moving IRQ handling to ATF */
-#define IMX_SIP_DDR_DVFS_WAIT_CHANGE		0x0F
-
 /* Query available frequencies. */
 #define IMX_SIP_DDR_DVFS_GET_FREQ_COUNT		0x10
 #define IMX_SIP_DDR_DVFS_GET_FREQ_INFO		0x11