spi: spi_amd: Update Kconfig dependencies

Add X86 and SPI_MEM as dependencies for the spi_amd driver to ensure it is
built only on relevant platforms and with the required SPI memory
framework.

Co-developed-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Akshata MukundShetty <akshata.mukundshetty@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Link: https://patch.msgid.link/20250516100658.585654-4-Raju.Rangoju@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: RajuRangoju

drivers/spi/Kconfig

@@ -1267,7 +1267,8 @@ config SPI_ZYNQMP_GQSPI
 config SPI_AMD
 	tristate "AMD SPI controller"
 	depends on PCI
-	depends on SPI_MASTER || COMPILE_TEST
+	depends on SPI_MASTER || X86 || COMPILE_TEST
+	depends on SPI_MEM
 	help
 	  Enables SPI controller driver for AMD SoC.