clk: qcom: gcc-ipq6018: fix terminating of frequency table arrays

In the Linux kernel, the following vulnerability has been resolved:

clk: qcom: gcc-ipq6018: 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.