serial: lpuart: use ipg clk for i.MX7ULP
To i.MX7ULP compatible lpuart, there is only ipg clk, no per clk.
So add a devtype check for i.MX7ULP.
Signed-off-by:
Peng Fan <peng.fan@nxp.com>
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To i.MX7ULP compatible lpuart, there is only ipg clk, no per clk.
So add a devtype check for i.MX7ULP.
Signed-off-by:
Peng Fan <peng.fan@nxp.com>