qualcommbe: ipq95xx: Update PCS & PPE & QCA8084 drivers

Update the PCS & PPE patches from the upstream patches, which
enhance performance with GRO/GSO/TSO issue fixed.

Update the QCA8084 patches to support QCA8084 PHY function, which
can be used with IPQ9574 RDP connected with QCA8084.

Additionally, Add the RDP543 DTS to enable IPQ9574 RDP board connected
QCA8084 PHY chip.

Signed-off-by: Ram Chandra Jangir <rjangir@qti.qualcomm.com>

Author: Luo Jie

target/linux/qualcommbe/patches-6.12/0501-driver-net-pcs-Update-IPQ9574-PCS-driver.patch

@@ -0,0 +1,75 @@
+From c24bf48d70b8c02f3c7b61e03ca3cbf43779b3d2 Mon Sep 17 00:00:00 2001
+From: Luo Jie <quic_luoj@quicinc.com>
+Date: Thu, 17 Apr 2025 18:47:08 +0800
+Subject: [PATCH 502/512] bitfield: Add FIELD_MODIFY() helper
+
+Add a helper for replacing the contents of bitfield in memory
+with the specified value.
+
+Even though a helper xxx_replace_bits() is available, it is not
+well documented, and only reports errors at the run time, which
+will not be helpful to catch possible overflow errors due to
+incorrect parameter types used.
+
+FIELD_MODIFY(REG_FIELD_C, &reg, c) is the wrapper to the code below.
+
+	reg &= ~REG_FIELD_C;
+	reg |= FIELD_PREP(REG_FIELD_C, c);
+
+Yury: trim commit message, align backslashes.
+
+Signed-off-by: Luo Jie <quic_luoj@quicinc.com>
+Signed-off-by: Yury Norov <yury.norov@gmail.com>
+---
+ include/linux/bitfield.h | 21 +++++++++++++++++++--
+ 1 file changed, 19 insertions(+), 2 deletions(-)
+
+diff --git a/include/linux/bitfield.h b/include/linux/bitfield.h
+index 63928f173223..6d9a53db54b6 100644
+--- a/include/linux/bitfield.h
++++ b/include/linux/bitfield.h
+@@ -8,6 +8,7 @@
+ #define _LINUX_BITFIELD_H
+ 
+ #include <linux/build_bug.h>
++#include <linux/typecheck.h>
+ #include <asm/byteorder.h>
+ 
+ /*
+@@ -38,8 +39,7 @@
+  *	  FIELD_PREP(REG_FIELD_D, 0x40);
+  *
+  * Modify:
+- *  reg &= ~REG_FIELD_C;
+- *  reg |= FIELD_PREP(REG_FIELD_C, c);
++ *  FIELD_MODIFY(REG_FIELD_C, &reg, c);
+  */
+ 
+ #define __bf_shf(x) (__builtin_ffsll(x) - 1)
+@@ -156,6 +156,23 @@
+ 		(typeof(_mask))(((_reg) & (_mask)) >> __bf_shf(_mask));	\
+ 	})
+ 
++/**
++ * FIELD_MODIFY() - modify a bitfield element
++ * @_mask: shifted mask defining the field's length and position
++ * @_reg_p: pointer to the memory that should be updated
++ * @_val: value to store in the bitfield
++ *
++ * FIELD_MODIFY() modifies the set of bits in @_reg_p specified by @_mask,
++ * by replacing them with the bitfield value passed in as @_val.
++ */
++#define FIELD_MODIFY(_mask, _reg_p, _val)						\
++	({										\
++		typecheck_pointer(_reg_p);						\
++		__BF_FIELD_CHECK(_mask, *(_reg_p), _val, "FIELD_MODIFY: ");		\
++		*(_reg_p) &= ~(_mask);							\
++		*(_reg_p) |= (((typeof(_mask))(_val) << __bf_shf(_mask)) & (_mask));	\
++	})
++
+ extern void __compiletime_error("value doesn't fit into mask")
+ __field_overflow(void);
+ extern void __compiletime_error("bad bitfield mask")
+-- 
+2.34.1
+