ENGR00329450 ARM: imx: set CLK_SET_RATE_GATE for gate and divider clocks

ENGR00329450 ARM: imx: set CLK_SET_RATE_GATE for gate and divider clocks

A recent QSPI boot failure (5% possibility) on i.MX6SX reminds us that
the peripheral clocks are still missing the check, rate cannot be
changed when the clock is enabled due to the glitchy multiplexers.

Commit a63839445ad3 (ENGR00325423: ARM: imx: pllv3 can only be
configured when it's powered off) adds the check for PLL clocks but
misses the peripheral clocks.  The patch uses the help from clock
framework to check the condition with flag CLK_SET_RATE_GATE.

We adds flag CLK_SET_RATE_GATE for i.MX gate and divider clocks on
which the client drivers usually make clk_set_rate() call, so that the
call will fail when clock is still on instead of standing the risk of
running into glitch issue.

shawn.guo: cherry-pick commit 6487168bc783 from imx_3.10.y

Signed-off-by: Shawn Guo <shawn.guo@freescale.com>