Revert "[nrf noup] entropy: Add fake entropy nRF PRNG driver"

This reverts commit ac886cc.

Signed-off-by: Marcin Szymczyk <[email protected]>

Author: masz-nordic

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuapp.dts

@@ -26,7 +26,6 @@
 		zephyr,bt-hci = &bt_hci_ipc0;
 		nordic,802154-spinel-ipc = &ipc0;
 		zephyr,canbus = &can120;
-		zephyr,entropy = &prng;
 	};
 
 	aliases {
@@ -107,11 +106,6 @@
 			pwms = <&pwm130 0 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
 		};
 	};
-
-	prng: prng {
-		compatible = "nordic,entropy-prng";
-		status = "okay";
-	};
 };
 
 &cpuapp_ram0x_region {

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpurad.dts

@@ -27,11 +27,6 @@
 		zephyr,ieee802154 = &cpurad_ieee802154;
 		zephyr,bt-hci-ipc = &ipc0;
 		nordic,802154-spinel-ipc = &ipc0;
-		zephyr,entropy = &prng;
-	};
-	prng: prng {
-		compatible = "nordic,entropy-prng";
-		status = "okay";
 	};
 	aliases {
 		ipc-to-cpusys = &cpurad_cpusys_ipc;

boards/nordic/nrf9280pdk/nrf9280pdk_nrf9280_cpuapp.dts

@@ -28,7 +28,6 @@
 		zephyr,bt-hci = &bt_hci_ipc0;
 		nordic,802154-spinel-ipc = &ipc0;
 		zephyr,canbus = &can120;
-		zephyr,entropy = &prng;
 	};
 
 	aliases {
@@ -109,11 +108,6 @@
 			pwms = <&pwm130 0 PWM_MSEC(20) PWM_POLARITY_NORMAL>;
 		};
 	};
-
-	prng: prng {
-		compatible = "nordic,entropy-prng";
-		status = "okay";
-	};
 };
 
 &cpuapp_ram0x_region {

boards/nordic/nrf9280pdk/nrf9280pdk_nrf9280_cpurad.dts

@@ -28,11 +28,6 @@
 		zephyr,ieee802154 = &cpurad_ieee802154;
 		zephyr,bt-hci-ipc = &ipc0;
 		nordic,802154-spinel-ipc = &ipc0;
-		zephyr,entropy = &prng;
-	};
-	prng: prng {
-		compatible = "nordic,entropy-prng";
-		status = "okay";
 	};
 	aliases {
 		ipc-to-cpusys = &cpurad_cpusys_ipc;

drivers/entropy/CMakeLists.txt

@@ -36,11 +36,4 @@ zephyr_library_sources_ifdef(CONFIG_ENTROPY_NPCX_DRBG       entropy_npcx_drbg.c)
 zephyr_library_sources_ifdef(CONFIG_ENTROPY_MAX32_TRNG      entropy_max32.c)
 zephyr_library_sources_ifdef(CONFIG_ENTROPY_RENESAS_RA      entropy_renesas_ra.c)
 
-if (CONFIG_FAKE_ENTROPY_NRF_PRNG)
-  zephyr_library_sources(fake_entropy_nrf_prng.c)
-
-  message(WARNING "\nA nRF PRNG is used, which does not produce real random bits."
-  "This is not secure and should therefore never be used in a product.")
-endif()
-
 zephyr_library_link_libraries_ifdef(CONFIG_BUILD_WITH_TFM tfm_api)

drivers/entropy/Kconfig

@@ -38,7 +38,6 @@ source "drivers/entropy/Kconfig.psa_crypto"
 source "drivers/entropy/Kconfig.npcx"
 source "drivers/entropy/Kconfig.max32"
 source "drivers/entropy/Kconfig.renesas_ra"
-source "drivers/entropy/Kconfig.nrf_prng"
 
 config ENTROPY_HAS_DRIVER
 	bool

drivers/entropy/Kconfig.nrf_prng

@@ -16,10 +16,6 @@ nvic: &cpuapp_nvic {};
 /delete-node/ &cpuflpr_clic;
 
 / {
-	chosen {
-		zephyr,entropy = &prng;
-	};
-
 	soc {
 		compatible = "simple-bus";
 		interrupt-parent = <&cpuapp_nvic>;
@@ -30,11 +26,6 @@ nvic: &cpuapp_nvic {};
 		compatible = "zephyr,psa-crypto-rng";
 		status = "disabled";
 	};
-
-	prng: prng {
-		compatible = "nordic,entropy-prng";
-		status = "okay";
-	};
 };
 
 &cpuflpr_vpr {