net: pse-pd: Kconfig: Fix missing firmware loader config select

Selecting FW_UPLOAD is not sufficient as it allows the firmware loader
API to be built as a module alongside the pd692x0 driver built as builtin.
Add select FW_LOADER to fix this issue.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406200632.hSChnX0g-lkp@intel.com/
Fixes: 9a993845 ("net: pse-pd: Add PD692x0 PSE controller driver")
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/pse-pd/Kconfig

@@ -23,6 +23,7 @@ config PSE_REGULATOR
 config PSE_PD692X0
 	tristate "PD692X0 PSE controller"
 	depends on I2C
+	select FW_LOADER
 	select FW_UPLOAD
 	help
 	  This module provides support for PD692x0 regulator based Ethernet