ARM: OMAP4/5: Move USB clocks to essential group.

USB clocks will be required for fastboot, tftp
related functionalities. Move these clocks to
essential group inorder to have the functionality
working when non-essential clocks are not enabled.

Signed-off-by: R Sricharan <r.sricharan@ti.com>
diff --git a/arch/arm/cpu/armv7/omap5/clocks.c b/arch/arm/cpu/armv7/omap5/clocks.c
index d553d12..eecfbad 100644
--- a/arch/arm/cpu/armv7/omap5/clocks.c
+++ b/arch/arm/cpu/armv7/omap5/clocks.c
@@ -394,6 +394,9 @@
 		&prcm->cm_l4per_i2c2_clkctrl,
 		&prcm->cm_l4per_i2c3_clkctrl,
 		&prcm->cm_l4per_i2c4_clkctrl,
+		&prcm->cm_l3init_hsusbtll_clkctrl,
+		&prcm->cm_l3init_hsusbhost_clkctrl,
+		&prcm->cm_l3init_fsusb_clkctrl,
 		0
 	};
 
@@ -432,7 +435,6 @@
 		&prcm->cm_l3instr_l3_instr_clkctrl,
 		&prcm->cm_l3instr_intrconn_wp1_clkctrl,
 		&prcm->cm_l3init_hsi_clkctrl,
-		&prcm->cm_l3init_hsusbtll_clkctrl,
 		&prcm->cm_l4per_hdq1w_clkctrl,
 		0
 	};
@@ -471,8 +473,6 @@
 		&prcm->cm_cam_fdif_clkctrl,
 		&prcm->cm_dss_dss_clkctrl,
 		&prcm->cm_sgx_sgx_clkctrl,
-		&prcm->cm_l3init_hsusbhost_clkctrl,
-		&prcm->cm_l3init_fsusb_clkctrl,
 		0
 	};