clk: qcom: gcc-ipq9574: fix terminating of frequency table arrays

The frequency table arrays are supposed to be terminated with an
empty element. Add such entry to the end of the arrays where it
is missing in order to avoid possible out-of-bound access when
the table is traversed by functions like qcom_find_freq() or
qcom_find_freq_floor().

Only compile tested.

Fixes: d75b82cff488 ("clk: qcom: Add Global Clock Controller driver for IPQ9574")
Signed-off-by: Gabor Juhos <[e-mail]>
Reviewed-by: Stephen Boyd <[e-mail]>
Cc: [e-mail]
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bjorn Andersson <[e-mail]>

drivers/clk/qcom/gcc-ipq9574.c

···
 static const struct freq_tbl ftbl_sdcc_ice_core_clk_src[] = {
 	F(150000000, P_GPLL4, 8, 0, 0),
 	F(300000000, P_GPLL4, 4, 0, 0),
+	{ }
 };
 
 static struct clk_rcg2 sdcc1_ice_core_clk_src = {