clk: at91: clk-sam9x60-pll: re-factor to support individual core freq outputs

clk: at91: clk-sam9x60-pll: re-factor to support individual core freq outputs

SAM9X7 SoC family supports different core output frequencies for
different PLL IDs. To handle the same in the PLL driver, a separate
parameter core_output is added. The sam9x60 and sama7g5 SoC PMC drivers
are aligned to the PLL driver by adding the core output freq range in
the PLL characteristics configurations.

Signed-off-by: Varshini Rajendran <varshini.rajendran@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Link: https://lore.kernel.org/r/20240729070737.1990756-1-varshini.rajendran@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>