msm: clock-copper: Correct the prng clock lookup entry

Map the (real) gcc_prng_ahb_clk to the MSM RNG device instead
of the dummy clock.

Change-Id: Ib9ee6695c7f35b319901d119d5b1186e39f6cc65
Signed-off-by: Hariprasad Dhalinarasimha <hnamgund@codeaurora.org>
diff --git a/arch/arm/mach-msm/clock-copper.c b/arch/arm/mach-msm/clock-copper.c
index c0245a3..7812321 100644
--- a/arch/arm/mach-msm/clock-copper.c
+++ b/arch/arm/mach-msm/clock-copper.c
@@ -4910,7 +4910,7 @@
 	CLK_LOOKUP("bus_clk",  q6ss_ahb_lfabif_clk.c, "pil-q6v5-lpass"),
 	CLK_LOOKUP("mem_clk", gcc_boot_rom_ahb_clk.c, ""),
 	CLK_LOOKUP("bus_clk",  gcc_mss_cfg_ahb_clk.c, ""),
-	CLK_DUMMY("core_clk", PRNG_CLK , "msm_rng.0", OFF),
+	CLK_LOOKUP("core_clk", gcc_prng_ahb_clk.c, "msm_rng.0"),
 
 	/* TODO: Remove dummy clocks as soon as they become unnecessary */
 	CLK_DUMMY("phy_clk",       NULL,    "msm_otg", OFF),